macOS - Engine multithreading does not stay on, hindering performance severely

Hi.

I'm trying to play this on a MacBook Pro M3 Max, while I can get playable performance, the Engine multithreading option DOES NOT STAY ON, hindering performance greatly.

Not even modifying the configuration files directly does it stay on.

What gives? Why did this option suddenly stop working on macOS?

It was disabled on purpose due to a crashing issue, see patch notes:

"Enabling Engine Multithreading on macOS when using the Steam client has been disabled while we investigate a client crash."