### 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)

EditorNode::ExecuteThreadArgs *eta = (EditorNode::ExecuteThreadArgs *)p_ud;
	Error err = OS::get_singleton()->execute(eta->path, eta->args, &eta->output, &eta->exitcode, true, &eta->execute_output_mutex);
	print_verbose("Thread exit status: " + itos(eta->exitcode));
	if (err != OK) {
		eta->exitcode = err;
	}
	eta->done.set();
}
int EditorNode::execute_and_show_output(const String &p_title, const String &p_path, const List<String> &p_arguments, bool p_close_on_ok, bool p_close_on_errors) {
	if (execute_output_dialog) {
		execute_output_dialog->set_title(p_title);
		execute_output_dialog->get_ok_button()->set_disabled(true);
		execute_outputs->clear();
		execute_outputs->set_scroll_follow(true);
		EditorInterface::get_singleton()->popup_dialog_centered_ratio(execute_output_dialog);
	}
	ExecuteThreadArgs eta;
	eta.path = p_path;
	eta.args = p_arguments;
	eta.exitcode = 255;
	int prev_len = 0;
	eta.execute_output_thread.start(_execute_thread, &eta);