Possible to stop Propagation of _process signal

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1

Godot Version

v4.3.stable.mono.official [77dcf97d8]

Question

Is it possible to stop propagation of the _process (NOTIFICATION_PROCESS) signal?

Looking at the engine code, it does not appear to be possible with modifying the engine.

Signal Propagation:

scene/main/node.cpp: 2445 - 2454

void Node::propagate_notification(int p_notification) {
	ERR_THREAD_GUARD
	data.blocked++;
	notification(p_notification);

	for (KeyValue<StringName, Node *> &K : data.children) {
		K.value->propagate_notification(p_notification);
	}
	data.blocked--;
}

Signal Calls _process:

scene/main/node.cpp: 52 - 56

void Node::_notification(int p_notification) {
	switch (p_notification) {
		case NOTIFICATION_PROCESS: {
			GDVIRTUAL_CALL(_process, get_process_delta_time());
		} break;
        //...

Extra Info

I am looking at this because I am implemeting time scaling. I would like to cancel the default NOTIFICATION_PROCESS signal at a given node, and then send a new signal:

			GDVIRTUAL_CALL(_process, time_scale * get_process_delta_time());

I would prefer to be able to do this in a C# script. I understand that the community has decided not to implement per node time scaling directly in the engine. If we had an official way to interrupt built-in signals, it would enable some interesting possibilities.

If I can’t do this in a script, is there a way I can write a C++ addon to do it? I have not touched C++ in 10+ years.

Thank you!