Mac Studio m2 worked and then didn't

I have a brand new Mac Studio m2 Max. I played starcraft 2 three days in a row with superb performance and no issues. Then today, I go to open it and the game has been extraordinarily laggy, and growing more and more each time I try to reopen it to the point now where I only get the first frame of graphics and then nothing happens.

I have tried:
Repairing the drive
Reparing the game
Resetting ingame settings
Restarting

Update: I also tried editing the graphics settings in variables.txt to lowest setting. I think this worked initially, allowing me to once again play with no problems whatsoever. But then today I opened up the app and had the exact same issue again after having changed nothing. Something is definitely not working right.

Nothing helps. I can’t even open the game now.

update It seems this issue is only in full screen mode. Windowed mode seems to work fine.

I have the same issue. The Settings dialog shows Software Renderer even though Metal is enabled. OpenGL doesn’t work at all (crashes on startup)

The game runs okay for 1 - 2 seconds after alt-tabbing. Then becomes completely unresponsive again. The lag is insane (pretty sure it’s not using the GPU at all)