I've had this problem randomly show up a few months ago and I've tried about everything there is.

I tried verifying the game files, unsubscribing/deleting addons, checking mounted games and what not. Weirdly enough, when the game crashes, it doesn't produce any crash logs or any other file that has some details in it.

If anyone has experienced this kind of problem before and managed to fix it, it would be nice if they could share how they managed to do it. Otherwise, I'll keep looking for some fixes myself.