As someone else recommended, I limited my fps to 90. I only occasionally experienced some bugs, but those exist also on windows or were experienced simoultaneusly by the people I was playing with. So these are not Linux specific. I have played about 10 hours without exiting the game on Saturday and Sunday without experiencing any issues. (Haven't played a game this much for years lol). Runs absolutely perfect for me with no tinkering, I might not even need the FPS cap. Tho that hasn't bothered me. I was also able to tab out and back in to the game without issue. Steam overlay also works normally.