### Godot version

Godot 4.1-beta2

### System information

Manjaro Gnome, Intel Core i7-11800H

### Issue description

On a relatively modern laptop (Intel Core i7-11800H), in a scene with many scripted nodes (total of 900+ with roughly half of them scripted), adding or duplicating a node freezes the editor for several seconds. Godot 4.0.2 handles such scenes much better!

Here is a flame graph captured while repeatedly duplicating simple Marker2D nodes with Ctrl+D in a complicated scene:
![Screenshot from 2023-06-15 23-54-38](https://github.com/godotengine/godot/assets/2766569/d0019f17-9b82-4a26-9b47-71fa7a3bef3a)

Performance data file to use with hotspot v1.4.1 (relevant data starts at the 75-second mark and lasts about 20+ seconds):
[perf.data.perfparser.zip](https://github.com/godotengine/godot/files/11763700/perf.data.perfparser.zip)



### Steps to reproduce

1) Add 1000 nodes with a script attached.
2) Duplicate a node and witness lags.

Also affects scrolling the scene tree dock.

### Minimal reproduction project

[add_node_lags_repro.zip](https://github.com/godotengine/godot/files/11763731/add_node_lags_repro.zip)

return true;
				}
			}
		}
	} else {
		
		if (FileAccess::exists(path + ".import")) {
			return true;
		}
	}
	return false;
}
void EditorNode::request_instantiate_scene(const String &p_path) {
	SceneTreeDock::get_singleton()->instantiate(p_path);
}
void EditorNode::request_instantiate_scenes(const Vector<String> &p_files) {
	SceneTreeDock::get_singleton()->instantiate_scenes(p_files);
}
void EditorNode::_inherit_request(String p_file) {
	current_menu_option = FILE_NEW_INHERITED_SCENE;
	_dialog_action(p_file);
}
void EditorNode::_instantiate_request(const Vector<String> &p_files) {
	request_instantiate_scenes(p_files);
}
void EditorNode::_close_messages() {
	old_split_ofs = center_split->get_split_offset();
	center_split->set_split_offset(0);
}
void EditorNode::_show_messages() {