TaleSpire crashes when I try to load a game board. The performance is very slow on startup. I am able to get as far as my boards menu, but when I try to load a board I get the void for a few minutes before the whole game quits.

I was able to run the game before Proton became mandatory and I have no idea how to get back to the prior compatibility system.

Not your fault, I know. It's just that waiting for a working version is interrupting my game.