As far as I could tell, works just the same as in windows (maybe better, can't remember my performance, was over a year ago). Just clicked install, set proton to latest (7.0.6 at the time of writting) and clicked "Play". Hosted my own MP lobby and played as FPS with RTS Bot and FPS AI, then another game as RTS with 10 FPS AI. Both times, everything worked as expected, no major bugs, input issues, graphical issues or audio issues. "It just works"