Having “Tick Physics Async” enabled along with a reasonably small async substepping seems to cause the editor to freeze indefinitely when stopping play in editor. The lower the substepping value, the more likely it is to freeze. It happens even on a blank project if I also enable “Async Physics Tick” is an actor blueprint. Also, I get a console error (picture below) whenever I play in editor for the first time after opening up the project where async physics is enabled (the error doesn’t seem to stop it from playing) but on end play, there is like a 50% chance it freezes. When this happens, I have to restart the editor because after waiting for hours, I am still not able recover the session. I am using UE 5.3. Anybody know what is causing this?
