It was intended to function at least. Not freeze.
Except VR-3KKR, that was helter skelter gzdoom thing. Should probably have added it as DLC and not in the main DL for clarity as well, but too-late.
If I had to guess the cause, looking at the deh, it's because I used a weapon state in the monster (saw). I'll try switching that out maybe, see if it still crashes.