diff --git a/classes/deck/deck.gd b/classes/deck/deck.gd
index 88ca228..425c203 100644
--- a/classes/deck/deck.gd
+++ b/classes/deck/deck.gd
@@ -16,11 +16,13 @@ var save_path: String = ""
 var is_group: bool = false
 ## List of groups belonging to this deck, in the format of[br]
 ## [code]Dictionary[String -> Deck.id, Deck][/code]
-var groups: Dictionary = {}
-## A unique identifier for this deck.
+#var groups: Dictionary = {}
+## A unique identifier for this deck, or an ID for the group this deck represents.
 var id: String = ""
+## If this is a group, this is the local ID of this instance of the group.
+var instance_id: String = ""
 ## The parent deck of this deck, if this is a group.
-var _belonging_to: Deck # for groups
+#var _belonging_to: Deck # for groups
 ## The ID of this group's input node. Used only if [member is_group] is [code]true[/code].
 var group_input_node: String
 ## The ID of this group's input node. Used only if [member is_group] is [code]true[/code].
@@ -28,13 +30,24 @@ var group_output_node: String
 ## The ID of the group node this group is represented by, contained in this deck's parent deck.
 ## Used only if [member is_group] is [code]true[/code].
 ## @experimental
-var group_node: String
+#var group_node: String
+
+var emit_group_signals: bool = true
 
 ## Emitted when a node has been added to this deck.
 signal node_added(node: DeckNode)
 ## Emitted when a node has been removed from this deck.
 signal node_removed(node: DeckNode)
 
+#region group signals
+signal node_added_to_group(node: DeckNode, assign_id: String, assign_to_self: bool, deck: Deck)
+signal node_removed_from_group(node_id: String, remove_connections: bool, deck: Deck)
+signal nodes_connected_in_group(from_node_id: String, to_node_id: String, from_output_port: int, to_input_port: int, deck: Deck)
+signal nodes_disconnected_in_group(from_node_id: String, to_node_id: String, from_output_port: int, to_input_port: int, deck: Deck)
+signal node_port_value_updated(node_id: String, port_idx: int, new_value: Variant, deck: Deck)
+signal node_renamed(node_id: String, new_name: String, deck: Deck)
+signal node_moved(node_id: String, new_position: Dictionary, deck: Deck)
+#endregion
 
 ## Instantiate a node by its' [member DeckNode.node_type] and add it to this deck.[br]
 ## See [method add_node_inst] for parameter descriptions.
@@ -62,6 +75,26 @@ func add_node_inst(node: DeckNode, assign_id: String = "", assign_to_self: bool
 		node._id = assign_id
 
 	node_added.emit(node)
+	if is_group && emit_group_signals:
+		node_added_to_group.emit(node, assign_id, assign_to_self, self)
+
+	node.port_value_updated.connect(
+		func(port_idx: int, new_value: Variant):
+			if is_group && emit_group_signals:
+				node_port_value_updated.emit(node._id, port_idx, new_value, self)
+	)
+
+	node.renamed.connect(
+		func(new_name: String):
+			if is_group && emit_group_signals:
+				node_renamed.emit(node._id, new_name, self)
+	)
+
+	node.position_updated.connect(
+		func(new_position: Dictionary):
+			if is_group && emit_group_signals:
+				node_moved.emit(node._id, new_position, self)
+	)
 
 	return node
 
@@ -84,6 +117,9 @@ func connect_nodes(from_node_id: String, to_node_id: String, from_output_port: i
 
 	# TODO: prevent duplicate connections
 
+	if is_group && emit_group_signals:
+		nodes_connected_in_group.emit(from_node_id, to_node_id, from_output_port, to_input_port, self)
+
 	from_node.add_outgoing_connection(from_output_port, to_node._id, to_input_port)
 	return true
 
@@ -94,6 +130,8 @@ func disconnect_nodes(from_node_id: String, to_node_id: String, from_output_port
 	var to_node := get_node(to_node_id)
 	from_node.remove_outgoing_connection(from_output_port, to_node_id, to_input_port)
 	to_node.remove_incoming_connection(to_input_port)
+	if is_group && emit_group_signals:
+		nodes_disconnected_in_group.emit(from_node_id, to_node_id, from_output_port, to_input_port, self)
 
 
 ## Returns true if this deck has no nodes and no variables.
@@ -102,11 +140,14 @@ func is_empty() -> bool:
 
 
 ## Remove a node from this deck.
-func remove_node(uuid: String, remove_connections: bool = false) -> void:
+func remove_node(uuid: String, remove_connections: bool = false, keep_group_instances: bool = false) -> void:
 	var node := get_node(uuid)
 	if node == null:
 		return
 
+	if node.node_type == "group_node" && !keep_group_instances:
+		DeckHolder.close_group_instance(node.group_id, node.group_instance_id)
+
 	if remove_connections:
 		var outgoing_connections := node.outgoing_connections.duplicate(true)
 
@@ -125,6 +166,9 @@ func remove_node(uuid: String, remove_connections: bool = false) -> void:
 
 	node_removed.emit(node)
 
+	if is_group && emit_group_signals:
+		node_removed_from_group.emit(uuid, remove_connections, self)
+
 
 ## Group the [param nodes_to_group] into a new deck and return it.
 ## Returns [code]null[/code] on failure.[br]
@@ -138,20 +182,17 @@ func group_nodes(nodes_to_group: Array) -> Deck:
 			return x._id
 	)
 
-	var group := Deck.new()
-	group.is_group = true
-	group._belonging_to = self
-	var group_id := UUID.v4()
-	group.id = group_id
+	var group := DeckHolder.add_empty_group()
 
 	var midpoint := Vector2()
+	var temp := []
 	for node: DeckNode in nodes_to_group:
-		if node.node_type == "group_node": # for recursive grouping
-			var _group_id: String = node.group_id
-			var _group: Deck = groups[_group_id]
-			groups.erase(_group)
-			group.groups[_group_id] = _group
-			_group._belonging_to = group
+		#if node.node_type == "group_node":
+			#var _group_id: String = node.group_id
+			#var _group: Deck = groups[_group_id]
+			#groups.erase(_group)
+			#group.groups[_group_id] = _group
+			#_group._belonging_to = group
 
 		var outgoing_connections := node.outgoing_connections.duplicate(true)
 
@@ -169,35 +210,38 @@ func group_nodes(nodes_to_group: Array) -> Deck:
 					disconnect_nodes(from_node, node._id, incoming_connections[to_port][from_node], to_port)
 
 		midpoint += node.position_as_vector2()
-		remove_node(node._id)
+		remove_node(node._id, false, true)
 		group.add_node_inst(node, node._id)
 
 	midpoint /= nodes_to_group.size()
 
 	var _group_node := add_node_type("group_node")
-	_group_node.group_id = group_id
+	_group_node.group_id = group.id
+	_group_node.group_instance_id = group.instance_id
 	_group_node.position.x = midpoint.x
 	_group_node.position.y = midpoint.y
 	_group_node.position_updated.emit(_group_node.position)
-	group.group_node = _group_node._id
+	#group.group_node = _group_node._id
 
 	var input_node := group.add_node_type("group_input")
 	var output_node := group.add_node_type("group_output")
 	group.group_input_node = input_node._id
 	group.group_output_node = output_node._id
 
-	_group_node.input_node = input_node
-	_group_node.output_node = output_node
-	_group_node.setup_connections()
+	input_node.group_node = _group_node
+	output_node.group_node = _group_node
 
-	groups[group_id] = group
+	_group_node.input_node_id = input_node._id
+	_group_node.output_node_id = output_node._id
+	#_group_node.setup_connections()
+	_group_node.init_io()
 
 	return group
 
 
 ## Get a group belonging to this deck by its ID.
-func get_group(uuid: String) -> Deck:
-	return groups.get(uuid)
+#func get_group(uuid: String) -> Deck:
+	#return groups.get(uuid)
 
 
 func copy_nodes(nodes_to_copy: Array[String]) -> Dictionary:
@@ -276,6 +320,14 @@ func paste_nodes_from_dict(nodes: Dictionary, position: Vector2 = Vector2()) ->
 		nodes.nodes[node_id].incoming_connections = incoming_connections_res
 
 		var node := DeckNode.from_dict(nodes.nodes[node_id])
+		if node.node_type == "group_node":
+			var group := DeckHolder.make_new_group_instance(node.group_id)
+			node.group_instance_id = group.instance_id
+			group.get_node(group.group_input_node).group_node = node
+			group.get_node(group.group_output_node).group_node = node
+			node.input_node = group.get_node(group.group_input_node)
+			node.output_node = group.get_node(group.group_output_node)
+			node.init_io()
 		add_node_inst(node, ids_map[node_id])
 
 
@@ -298,7 +350,7 @@ func send_event(event_name: StringName, event_data: Dictionary = {}) -> void:
 
 
 ## Returns a [Dictionary] representation of this deck.
-func to_dict(with_meta: bool = true) -> Dictionary:
+func to_dict(with_meta: bool = true, group_ids: Array = []) -> Dictionary:
 	var inner := {
 		"nodes": {},
 		"variable_stack": variable_stack,
@@ -306,14 +358,18 @@ func to_dict(with_meta: bool = true) -> Dictionary:
 		"groups": {}
 	}
 
-	for node_id in nodes.keys():
+	for node_id: String in nodes.keys():
 		inner["nodes"][node_id] = nodes[node_id].to_dict(with_meta)
+		if (nodes[node_id] as DeckNode).node_type == "group_node":
+			if !(nodes[node_id].group_id in group_ids):
+				inner["groups"][nodes[node_id].group_id] = DeckHolder.get_deck(nodes[node_id].group_id).to_dict(with_meta, group_ids)
+				group_ids.append(nodes[node_id].group_id)
 
-	for group_id in groups.keys():
-		inner["groups"][group_id] = groups[group_id].to_dict(with_meta)
+	#for group_id in groups.keys():
+		#inner["groups"][group_id] = groups[group_id].to_dict(with_meta)
 
 	if is_group:
-		inner["group_node"] = group_node
+		inner["instance_id"] = instance_id
 		inner["group_input_node"] = group_input_node
 		inner["group_output_node"] = group_output_node
 
@@ -344,14 +400,27 @@ static func from_dict(data: Dictionary, path: String = "") -> Deck:
 
 	var groups_data: Dictionary = data.deck.groups as Dictionary
 
-	for group_id: String in groups_data:
-		var group := Deck.from_dict(groups_data[group_id])
-		group._belonging_to = deck
-		group.is_group = true
-		deck.groups[group_id] = group
-		group.group_node = groups_data[group_id]["deck"]["group_node"]
-		group.group_input_node = groups_data[group_id]["deck"]["group_input_node"]
-		group.group_output_node = groups_data[group_id]["deck"]["group_output_node"]
-		deck.get_node(group.group_node).init_io()
+	for node_id: String in deck.nodes:
+		var node := deck.get_node(node_id)
+		if node.node_type != "group_node":
+			continue
+		var group_id: String = node.group_id
+		var group_instance_id: String = node.group_instance_id
+		var group_data: Dictionary = groups_data[group_id]
+		var group := DeckHolder.add_group_from_dict(group_data, group_id, group_instance_id)
+		group.get_node(group.group_input_node).group_node = node
+		group.get_node(group.group_output_node).group_node = node
+		node.init_io()
+
+	#for group_id: String in groups_data:
+		#var group := Deck.from_dict(groups_data[group_id])
+		#group._belonging_to = deck
+		#group.is_group = true
+		#deck.groups[group_id] = group
+		#group.group_node = groups_data[group_id]["deck"]["group_node"]
+		#group.group_input_node = groups_data[group_id]["deck"]["group_input_node"]
+		#group.group_output_node = groups_data[group_id]["deck"]["group_output_node"]
+		#deck.get_node(group.group_node).init_io()
+
 
 	return deck
diff --git a/classes/deck/deck_holder.gd b/classes/deck/deck_holder.gd
index 86de789..b0b1688 100644
--- a/classes/deck/deck_holder.gd
+++ b/classes/deck/deck_holder.gd
@@ -3,14 +3,15 @@ class_name DeckHolder
 ## A static class holding references to all decks opened in the current session.
 
 ## List of decks opened this session.
-static var decks: Array[Deck]
+#static var decks: Array[Deck]
+static var decks: Dictionary # Dictionary[String -> id, (Deck|Dictionary[String -> instance_id, Deck])]
 
 
 ## Returns a new empty deck and assigns a new random ID to it.
 static func add_empty_deck() -> Deck:
 	var deck := Deck.new()
-	DeckHolder.decks.append(deck)
 	var uuid := UUID.v4()
+	decks[uuid] = deck
 	deck.id = uuid
 	return deck
 
@@ -21,17 +22,180 @@ static func open_deck_from_file(path: String) -> Deck:
 	if f.get_error() != OK:
 		return null
 
-	var deck := Deck.from_dict(JSON.parse_string(f.get_as_text()), path)
-	DeckHolder.decks.append(deck)
-
+	var deck := open_deck_from_dict(JSON.parse_string(f.get_as_text()), path)
 	return deck
 
 
+static func open_deck_from_dict(data: Dictionary, path := "") -> Deck:
+	var deck := Deck.from_dict(data, path)
+	decks[deck.id] = deck
+	return deck
+
+
+static func add_group_from_dict(data: Dictionary, deck_id: String, instance_id: String) -> Deck:
+	var group := Deck.from_dict(data)
+	group.instance_id = instance_id
+	group.is_group = true
+	group.group_input_node = data.deck.group_input_node
+	group.group_output_node = data.deck.group_output_node
+	var instances: Dictionary = decks.get(deck_id, {})
+	instances[instance_id] = group
+	decks[deck_id] = instances
+	connect_group_signals(group)
+	return group
+
+
+static func make_new_group_instance(group_id: String) -> Deck:
+	var group := get_deck(group_id)
+	var data := group.to_dict()
+	return add_group_from_dict(data, group_id, UUID.v4())
+
+
+static func add_empty_group() -> Deck:
+	var group := Deck.new()
+	group.is_group = true
+	group.id = UUID.v4()
+	group.instance_id = UUID.v4()
+	decks[group.id] = {group.instance_id: group}
+	connect_group_signals(group)
+	return group
+
+
+static func connect_group_signals(group: Deck) -> void:
+	group.node_added_to_group.connect(DeckHolder._on_node_added_to_group)
+	group.node_removed_from_group.connect(DeckHolder._on_node_removed_from_group)
+	group.nodes_connected_in_group.connect(DeckHolder._on_nodes_connected_in_group)
+	group.nodes_disconnected_in_group.connect(DeckHolder._on_nodes_disconnected_in_group)
+	group.node_port_value_updated.connect(DeckHolder._on_node_port_value_updated)
+	group.node_renamed.connect(DeckHolder._on_node_renamed)
+	group.node_moved.connect(DeckHolder._on_node_moved)
+
+
+static func get_deck(id: String) -> Deck:
+	if !decks.has(id):
+		return null
+
+	if !(decks[id] is Dictionary):
+		return decks[id]
+	else:
+		return (decks[id] as Dictionary).values()[0]
+
+
+static func get_group_instance(group_id: String, instance_id: String) -> Deck:
+	if !decks.has(group_id):
+		return null
+
+	if decks[group_id] is Dictionary:
+		return (decks[group_id] as Dictionary).get(instance_id)
+	else:
+		return null
+
+
+static func close_group_instance(group_id: String, instance_id: String) -> void:
+	var group_instances: Dictionary = decks.get(group_id, {}) as Dictionary
+	group_instances.erase(instance_id)
+	if group_instances.is_empty():
+		decks.erase(group_id)
+
+
 ## Unloads a deck.
-static func close_deck(deck: Deck) -> void:
-	DeckHolder.decks.erase(deck)
+static func close_deck(deck_id: String) -> void:
+	if decks.get(deck_id) is Deck:
+		decks.erase(deck_id)
 
 
 static func send_event(event_name: StringName, event_data: Dictionary = {}) -> void:
-	for deck in decks:
-		deck.send_event(event_name, event_data)
+	for deck_id: String in decks:
+		if decks[deck_id] is Deck:
+			(decks[deck_id] as Deck).send_event(event_name, event_data)
+		else:
+			for deck_instance_id: String in decks[deck_id]:
+				(decks[deck_id][deck_instance_id] as Deck).send_event(event_name, event_data)
+
+
+#region group signal callbacks
+static func _on_node_added_to_group(node: DeckNode, assign_id: String, assign_to_self: bool, deck: Deck) -> void:
+	var group_id := deck.id
+	for instance_id: String in decks[group_id]:
+		if instance_id == deck.instance_id:
+			continue
+
+		var instance: Deck = get_group_instance(group_id, instance_id)
+		instance.emit_group_signals = false
+		var node_duplicate := DeckNode.from_dict(node.to_dict())
+		instance.add_node_inst(node_duplicate, assign_id, assign_to_self)
+		instance.emit_group_signals = true
+
+
+static func _on_node_removed_from_group(node_id: String, remove_connections: bool, deck: Deck) -> void:
+	var group_id := deck.id
+	for instance_id: String in decks[group_id]:
+		if instance_id == deck.instance_id:
+			continue
+
+		var instance: Deck = get_group_instance(group_id, instance_id)
+		instance.emit_group_signals = false
+		instance.remove_node(node_id, remove_connections)
+		instance.emit_group_signals = true
+
+
+static func _on_nodes_connected_in_group(from_node_id: String, to_node_id: String, from_output_port: int, to_input_port: int, deck: Deck) -> void:
+	var group_id := deck.id
+	for instance_id: String in decks[group_id]:
+		if instance_id == deck.instance_id:
+			continue
+
+		var instance: Deck = get_group_instance(group_id, instance_id)
+		instance.emit_group_signals = false
+		instance.connect_nodes(from_node_id, to_node_id, from_output_port, to_input_port)
+		instance.emit_group_signals = true
+
+
+static func _on_nodes_disconnected_in_group(from_node_id: String, to_node_id: String, from_output_port: int, to_input_port: int, deck: Deck) -> void:
+	var group_id := deck.id
+	for instance_id: String in decks[group_id]:
+		if instance_id == deck.instance_id:
+			continue
+
+		var instance: Deck = get_group_instance(group_id, instance_id)
+		instance.emit_group_signals = false
+		instance.disconnect_nodes(from_node_id, to_node_id, from_output_port, to_input_port)
+		instance.emit_group_signals = true
+
+
+static func _on_node_port_value_updated(node_id: String, port_idx: int, new_value: Variant, deck: Deck) -> void:
+	var group_id := deck.id
+	for instance_id: String in decks[group_id]:
+		if instance_id == deck.instance_id:
+			continue
+
+		var instance: Deck = get_group_instance(group_id, instance_id)
+		instance.emit_group_signals = false
+		instance.get_node(node_id).get_all_ports()[port_idx].set_value_no_signal(new_value)
+		instance.emit_group_signals = true
+
+
+static func _on_node_renamed(node_id: String, new_name: String, deck: Deck) -> void:
+	var group_id := deck.id
+	for instance_id: String in decks[group_id]:
+		if instance_id == deck.instance_id:
+			continue
+
+		var instance: Deck = get_group_instance(group_id, instance_id)
+		instance.emit_group_signals = false
+		instance.get_node(node_id).name = new_name
+		instance.emit_group_signals = true
+
+
+static func _on_node_moved(node_id: String, new_position: Dictionary, deck: Deck) -> void:
+	var group_id := deck.id
+	for instance_id: String in decks[group_id]:
+		if instance_id == deck.instance_id:
+			continue
+
+		var instance: Deck = get_group_instance(group_id, instance_id)
+		instance.emit_group_signals = false
+		instance.get_node(node_id).position = new_position.duplicate()
+		instance.emit_group_signals = true
+
+#endregion
diff --git a/classes/deck/deck_node.gd b/classes/deck/deck_node.gd
index 4f60b17..16aad1a 100644
--- a/classes/deck/deck_node.gd
+++ b/classes/deck/deck_node.gd
@@ -64,6 +64,10 @@ signal incoming_connection_added(from_port: int)
 ## Emitted when a connection to this node has been removed.
 signal incoming_connection_removed(from_port: int)
 
+signal port_value_updated(port_idx: int, new_value: Variant)
+
+signal renamed(new_name: String)
+
 
 ## Add an input port to this node. Usually only used at initialization.
 func add_input_port(type: DeckType.Types, label: String, descriptor: String = "") -> void:
@@ -85,10 +89,15 @@ func add_port(type: DeckType.Types, label: String, port_type: PortType, index_of
 	var port := Port.new(type, label, ports.size(), port_type, index_of_type, descriptor)
 	ports.append(port)
 	port_added.emit(ports.size() - 1)
+	port.value_updated.connect(
+		func(new_value: Variant) -> void:
+			port_value_updated.emit(port.index, new_value)
+	)
 	ports_updated.emit()
 
 
 ## Remove a port from this node.
+## @deprecated
 func remove_port(port_idx: int) -> void:
 	outgoing_connections.erase(port_idx)
 	incoming_connections.erase(port_idx)
@@ -186,6 +195,11 @@ func remove_incoming_connection(to_port: int) -> void:
 	incoming_connection_removed.emit(to_port)
 
 
+func rename(new_name: String) -> void:
+	name = new_name
+	renamed.emit(new_name)
+
+
 @warning_ignore("unused_parameter")
 func _event_received(event_name: StringName, event_data: Dictionary = {}) -> void:
 	pass
diff --git a/classes/deck/nodes/group_input_node.gd b/classes/deck/nodes/group_input_node.gd
index e2f4dad..93c7f3d 100644
--- a/classes/deck/nodes/group_input_node.gd
+++ b/classes/deck/nodes/group_input_node.gd
@@ -4,6 +4,8 @@ var output_count: int:
 	get:
 		return get_all_ports().size() - 1
 
+var group_node: DeckNode
+
 
 func _init() -> void:
 	name = "Group input"
@@ -68,5 +70,4 @@ func _post_load() -> void:
 
 
 func _value_request(from_port: int) -> Variant:
-	var group_node := _belonging_to._belonging_to.get_node(_belonging_to.group_node)
 	return group_node.request_value(group_node.get_input_ports()[from_port].index_of_type)
diff --git a/classes/deck/nodes/group_node.gd b/classes/deck/nodes/group_node.gd
index 120c41b..c251003 100644
--- a/classes/deck/nodes/group_node.gd
+++ b/classes/deck/nodes/group_node.gd
@@ -1,16 +1,20 @@
 extends DeckNode
 
 var group_id: String
+var group_instance_id: String
 var input_node: DeckNode
 var output_node: DeckNode
 
+var input_node_id: String
+var output_node_id: String
+
 var extra_ports: Array
 
 
 func _init() -> void:
 	name = "Group"
 	node_type = "group_node"
-	props_to_serialize = [&"group_id", &"extra_ports"]
+	props_to_serialize = [&"group_id", &"group_instance_id", &"extra_ports", &"input_node_id", &"output_node_id"]
 	appears_in_search = false
 
 
@@ -24,10 +28,16 @@ func _pre_connection() -> void:
 
 
 func init_io() -> void:
-	var group: Deck = _belonging_to.groups.get(group_id) as Deck
+	#var group: Deck = _belonging_to.groups.get(group_id) as Deck
+	var group := DeckHolder.get_group_instance(group_id, group_instance_id)
 	if !group:
 		return
 
+	if input_node && input_node.ports_updated.is_connected(recalculate_ports):
+		input_node.ports_updated.disconnect(recalculate_ports)
+	if output_node && output_node.ports_updated.is_connected(recalculate_ports):
+		output_node.ports_updated.disconnect(recalculate_ports)
+
 	input_node = group.get_node(group.group_input_node)
 	output_node = group.get_node(group.group_output_node)
 
diff --git a/classes/deck/nodes/group_output_node.gd b/classes/deck/nodes/group_output_node.gd
index 477d90b..baeb7b4 100644
--- a/classes/deck/nodes/group_output_node.gd
+++ b/classes/deck/nodes/group_output_node.gd
@@ -4,6 +4,8 @@ var input_count: int:
 	get:
 		return get_all_ports().size() - 1
 
+var group_node: DeckNode
+
 
 func _init() -> void:
 	name = "Group output"
@@ -69,5 +71,4 @@ func _post_load() -> void:
 
 
 func _receive(to_input_port: int, data: Variant, extra_data: Array = []) -> void:
-	var group_node := _belonging_to._belonging_to.get_node(_belonging_to.group_node)
 	group_node.send(group_node.get_output_ports()[to_input_port].index_of_type, data, extra_data)
diff --git a/classes/deck/port.gd b/classes/deck/port.gd
index 000c822..4387780 100644
--- a/classes/deck/port.gd
+++ b/classes/deck/port.gd
@@ -25,7 +25,7 @@ var index_of_type: int
 var index: int
 
 ## The value of this port.
-var value: Variant: set = set_value
+var value: Variant
 
 signal value_updated(new_value: Variant)
 
@@ -50,10 +50,13 @@ func _init(
 
 
 func set_value(v: Variant) -> void:
+	set_value_no_signal(v)
+	value_updated.emit(value)
+
+
+func set_value_no_signal(v: Variant) -> void:
 	if v is Callable:
 		value = v.call()
-		value_updated.emit(value)
 		return
 
 	value = v
-	value_updated.emit(value)
diff --git a/graph_node_renderer/debug_decks_list.gd b/graph_node_renderer/debug_decks_list.gd
new file mode 100644
index 0000000..440754e
--- /dev/null
+++ b/graph_node_renderer/debug_decks_list.gd
@@ -0,0 +1,26 @@
+extends VBoxContainer
+class_name DebugDecksList
+
+signal item_pressed(deck_id: String, instance_id: String)
+
+
+func _ready() -> void:
+	for i in get_children():
+		i.queue_free()
+
+	for deck_id: String in DeckHolder.decks:
+		if DeckHolder.decks[deck_id] is Deck:
+			var b := Button.new()
+			b.text = deck_id
+			b.pressed.connect(func():
+				item_pressed.emit(deck_id, "")
+				)
+			add_child(b)
+		else:
+			for instance_id: String in DeckHolder.decks[deck_id]:
+				var b := Button.new()
+				b.text = "%s::%s" % [deck_id, instance_id]
+				b.pressed.connect(func():
+					item_pressed.emit(deck_id, instance_id)
+					)
+				add_child(b)
diff --git a/graph_node_renderer/debug_decks_list.tscn b/graph_node_renderer/debug_decks_list.tscn
new file mode 100644
index 0000000..ef38b89
--- /dev/null
+++ b/graph_node_renderer/debug_decks_list.tscn
@@ -0,0 +1,6 @@
+[gd_scene load_steps=2 format=3 uid="uid://dm7sc6364j84i"]
+
+[ext_resource type="Script" path="res://graph_node_renderer/debug_decks_list.gd" id="1_etp6v"]
+
+[node name="DebugDecksList" type="VBoxContainer"]
+script = ExtResource("1_etp6v")
diff --git a/graph_node_renderer/deck_holder_renderer.gd b/graph_node_renderer/deck_holder_renderer.gd
index 670f108..15008b7 100644
--- a/graph_node_renderer/deck_holder_renderer.gd
+++ b/graph_node_renderer/deck_holder_renderer.gd
@@ -7,6 +7,7 @@ class_name DeckHolderRenderer
 
 ## Reference to the base scene for [DeckRendererGraphEdit]
 const DECK_SCENE := preload("res://graph_node_renderer/deck_renderer_graph_edit.tscn")
+const DEBUG_DECKS_LIST := preload("res://graph_node_renderer/debug_decks_list.tscn")
 
 ## Reference to the main windows [TabContainerCustom]
 @onready var tab_container: TabContainerCustom = %TabContainerCustom as TabContainerCustom
@@ -89,8 +90,8 @@ func add_empty_deck() -> void:
 	var inst: DeckRendererGraphEdit = DECK_SCENE.instantiate()
 	inst.deck = deck
 	tab_container.add_content(inst, "Deck %s" % (tab_container.get_tab_count() + 1))
-	tab_container.set_tab_metadata(tab_container.get_current_tab(), deck)
-	inst.group_enter_requested.connect(_on_deck_renderer_group_enter_requested.bind(deck))
+	tab_container.set_tab_metadata(tab_container.get_current_tab(), deck.id)
+	inst.group_enter_requested.connect(_on_deck_renderer_group_enter_requested)
 
 ## Closes the current tab in [member tab_container]
 func close_current_tab() -> void:
@@ -135,8 +136,9 @@ func _on_file_dialog_open_files(paths: PackedStringArray) -> void:
 		var inst: DeckRendererGraphEdit = DECK_SCENE.instantiate()
 		inst.deck = deck
 		tab_container.add_content(inst, "Deck %s" % (tab_container.get_tab_count() + 1))
+		tab_container.set_tab_metadata(tab_container.get_current_tab(), deck.id)
 		inst.initialize_from_deck()
-		inst.group_enter_requested.connect(_on_deck_renderer_group_enter_requested.bind(deck))
+		inst.group_enter_requested.connect(_on_deck_renderer_group_enter_requested)
 
 ## Gets the currently active [Deck] from [member tab_container]
 func get_active_deck() -> Deck:
@@ -165,14 +167,15 @@ func disconnect_file_dialog_signals() -> void:
 ## Connected to [signal DeckRenderGraphEdit.group_entered_request] to allow entering
 ## groups based off the given [param group_id] and [param deck].  As well as adding
 ## a corresponding tab to [member tab_container]
-func _on_deck_renderer_group_enter_requested(group_id: String, deck: Deck) -> void:
-	var group_deck := deck.get_group(group_id)
+func _on_deck_renderer_group_enter_requested(group_id: String) -> void:
+	#var group_deck := deck.get_group(group_id)
+	var group_deck := DeckHolder.get_deck(group_id)
 	var deck_renderer: DeckRendererGraphEdit = DECK_SCENE.instantiate()
 	deck_renderer.deck = group_deck
 	deck_renderer.initialize_from_deck()
 	tab_container.add_content(deck_renderer, "Group %s" % (tab_container.get_tab_count() + 1))
-	tab_container.set_tab_metadata(tab_container.get_current_tab(), group_deck)
-	deck_renderer.group_enter_requested.connect(_on_deck_renderer_group_enter_requested.bind(deck_renderer.deck))
+	tab_container.set_tab_metadata(tab_container.get_current_tab(), group_id)
+	deck_renderer.group_enter_requested.connect(_on_deck_renderer_group_enter_requested)
 
 
 func _on_connections_id_pressed(id: int) -> void:
@@ -194,3 +197,33 @@ func _on_obs_websocket_setup_dialog_connect_button_pressed(state: OBSWebsocketSe
 
 func _process(delta: float) -> void:
 	DeckHolder.send_event(&"process", {"delta": delta})
+
+
+func _on_debug_id_pressed(id: int) -> void:
+	var d := AcceptDialog.new()
+	var debug_decks: DebugDecksList = DEBUG_DECKS_LIST.instantiate()
+	d.add_child(debug_decks)
+	d.canceled.connect(d.queue_free)
+	d.confirmed.connect(d.queue_free)
+	debug_decks.item_pressed.connect(_on_debug_decks_viewer_item_pressed)
+	add_child(d)
+	d.popup_centered()
+
+
+func _on_debug_decks_viewer_item_pressed(deck_id: String, instance_id: String) -> void:
+	if instance_id == "":
+		var deck := DeckHolder.get_deck(deck_id)
+		var inst: DeckRendererGraphEdit = DECK_SCENE.instantiate()
+		inst.deck = deck
+		tab_container.add_content(inst, "<Deck %s>" % [deck_id.left(8)])
+		tab_container.set_tab_metadata(tab_container.get_current_tab(), deck.id)
+		inst.initialize_from_deck()
+		inst.group_enter_requested.connect(_on_deck_renderer_group_enter_requested)
+	else:
+		var deck := DeckHolder.get_group_instance(deck_id, instance_id)
+		var inst: DeckRendererGraphEdit = DECK_SCENE.instantiate()
+		inst.deck = deck
+		tab_container.add_content(inst, "<Group %s::%s>" % [deck_id.left(8), instance_id.left(8)])
+		tab_container.set_tab_metadata(tab_container.get_current_tab(), deck.id)
+		inst.initialize_from_deck()
+		inst.group_enter_requested.connect(_on_deck_renderer_group_enter_requested)
diff --git a/graph_node_renderer/deck_holder_renderer.tscn b/graph_node_renderer/deck_holder_renderer.tscn
index ab3e0e4..0b66c03 100644
--- a/graph_node_renderer/deck_holder_renderer.tscn
+++ b/graph_node_renderer/deck_holder_renderer.tscn
@@ -122,6 +122,11 @@ item_0/id = 0
 item_1/text = "Twitch.."
 item_1/id = 1
 
+[node name="Debug" type="PopupMenu" parent="MarginContainer/VSplitContainer/VBoxContainer/MenuBar"]
+item_count = 1
+item_0/text = "Decks..."
+item_0/id = 0
+
 [node name="TabContainerCustom" parent="MarginContainer/VSplitContainer/VBoxContainer" instance=ExtResource("1_s3ug2")]
 unique_name_in_owner = true
 layout_mode = 2
@@ -153,4 +158,5 @@ visible = false
 
 [connection signal="id_pressed" from="MarginContainer/VSplitContainer/VBoxContainer/MenuBar/File" to="." method="_on_file_id_pressed"]
 [connection signal="id_pressed" from="MarginContainer/VSplitContainer/VBoxContainer/MenuBar/Connections" to="." method="_on_connections_id_pressed"]
+[connection signal="id_pressed" from="MarginContainer/VSplitContainer/VBoxContainer/MenuBar/Debug" to="." method="_on_debug_id_pressed"]
 [connection signal="connect_button_pressed" from="OBSWebsocketSetupDialog" to="." method="_on_obs_websocket_setup_dialog_connect_button_pressed"]
diff --git a/graph_node_renderer/deck_node_renderer_graph_node.gd b/graph_node_renderer/deck_node_renderer_graph_node.gd
index 0d690bc..a79f2d0 100644
--- a/graph_node_renderer/deck_node_renderer_graph_node.gd
+++ b/graph_node_renderer/deck_node_renderer_graph_node.gd
@@ -18,12 +18,14 @@ func _ready() -> void:
 	for port in node.get_all_ports():
 		update_port(port)
 	position_offset_changed.connect(_on_position_offset_changed)
+	node.renamed.connect(_on_node_renamed)
 
 ## Connected to [signal GraphElement.position_offset_updated] and updates the
 ## [member node]s properties
 func _on_position_offset_changed() -> void:
 	node.position.x = position_offset.x
 	node.position.y = position_offset.y
+	node.position_updated.emit(node.position)
 
 ## Connected to [member node]s [signal position_updated] to keep parity with the
 ## data position.
@@ -32,7 +34,7 @@ func _on_node_position_updated(new_position: Dictionary) -> void:
 	position_offset.x = new_position.x
 	position_offset.y = new_position.y
 	position_offset_changed.connect(_on_position_offset_changed)
-	print("PO: ", position_offset)
+
 
 ## Connected to [member node]s [signal port_added] handles setting up the specified
 ## [member Port.descriptor] with it's required nodes/signals etc. + adding the port
@@ -68,6 +70,10 @@ func _on_node_ports_updated() -> void:
 		update_port(port)
 
 
+func _on_node_renamed(new_name: String) -> void:
+	title = new_name
+
+
 func update_port(port: Port) -> void:
 	var descriptor_split := port.descriptor.split(":")
 	match descriptor_split[0]:
diff --git a/graph_node_renderer/deck_renderer_graph_edit.gd b/graph_node_renderer/deck_renderer_graph_edit.gd
index 113e9b9..fa75e69 100644
--- a/graph_node_renderer/deck_renderer_graph_edit.gd
+++ b/graph_node_renderer/deck_renderer_graph_edit.gd
@@ -211,7 +211,7 @@ func _input(event: InputEvent) -> void:
 func _on_rename_popup_rename_confirmed(new_name: String) -> void:
 	var node: DeckNodeRendererGraphNode = get_selected_nodes()[0]
 	node.title = new_name
-	node.node.name = new_name
+	node.node.rename(new_name)
 
 
 func _on_rename_popup_closed() -> void: