Random Freeze

I’m working on a project that keeps freezing up. No self clicking stop button or anything like it this time. It just stops working.
I can still click around the timeline and change the playhead position, I can duplicate a track, so it’s not completely frozen. But I can’t hit play or delete audio. Then it crashes. The project is saved on the internal drive.

I copy / pasted everything into a new project and for now it’s working without any more crashes. Can provide both project files if anyone wants to have a look.

Win10 Pro, Audacity 3.1.1 (and 3.1.0 - i went back to it after the crashes started)