In reply to@matejc:matrix.matejc.com I have no clue on how to do it with official Proton 10, but with Proton GE 10, you can just set PROTONENABLEWAYLAND=1 before launching a game
I tried wayland and it seems to work. But I could not use GE as the game would open on the wrong monitor lol. But Proton-EM seems to have a fix where I can specify which monitor I want to use and with that it works.
Nila The Dragon