https://steamcommunity.com/app/1867240/discussions/0/573792728906914951/?ctp=6#c588434795636287991
https://www.protondb.com/app/1867240
There will be one more playtest from August 21–23. To receive an invitation, register via Steam or player.gg
https://x.com/HowardPhilpott/status/2082040132425650683 - steam deck gameplay
because usually its the proton team that finds what causes any issue and fixes it in the next update or two.
but if the games dev is actively working on proton, then the compatibility will be better and fewer issues for the proton team to deal with.