The launcher starts, but after clicking to start the game, the launcher becomes a bit transparent and hangs. The game seems to be running, but invisible, in the sense that I can't click on anything in the screen, unless, I press alt tab to change to another app. After several changes between apps, you are able to see the "screen" of the game, but it is just a mess of green squares. I tried with proton version 5.0, 5.13, 6.3 and experimental, all with and without the lancher option taskset -c 0 %command% (as seen in another comments), but not dice, it is always pretty much the same issue