Hello, rather recently i started getting an issue of my non-steam games being stuck on “Launching” when started in gaming mode. But when i switch to desktop mode and start them there through Steam, they work just fine.
Obviously I can play using desktop mode only, but i prefer the convenience of gaming mode.
I’ve tried countless things in attempt to fix this - different versions of proton, disabling wifi, more than I can even remember right now. I’m really tired of spending time on fixing this and hope I get a solution here
try adding to launch options.
PROTON_LOG=1 %command%
you should get a logfile either in the games own folder or your home/documents folder, cant remember which, have a look in the log for any obvious errors/fails.
Ive had some games with issues like yours, got some of them working properly in gamemode by changing to GE-Proton (which it sounds like you have tried) or by running ProtonTricks and enabling Virtual Desktop.
I had this problem today : i just changed UMA buffer size to 4g and the game is now working in game mode
Go desktop mod et verify file for all the steam runtime 1.0/2.0/3.0 it do the trick for me