Game will not launch on my deck unless you add "-nolauncher" before starting the game. [steam-65800.log](https://github.com/ValveSoftware/Proton/files/14808673/steam-65800.log)
Tried both options, even with Proton 4.2.1, performance is just as bad. I suspect you may be onto something here, but not sure what exactly I could be doing wrong on my end.