Hello @Ramdlenn, we're tracking issues with games run with Proton in the Proton issue tracker. Also, we're using one issue report per unofficially supported game title, so I've gone ahead and transferred this issue report to https://github.com/ValveSoftware/Proton/issues/2704#issuecomment-3042937892.
proton experimentalx1 2025-07
Your system information
Please describe your issue in as much detail as possible:
I've been having some issues gaming wise, every time i launch Counter Strike 2 (CS2) the game decides to crash right after a few seconds in the main menu, i've used the default Proton to launch it, as well as all the other Proton versions like Proton Experimental, Hotfix, and 9 but it still made the same result of crashing the game, making my cpu go sky high. I've even tried to do something with the advanced launch options, capping the fps to 20 or something, but it didnt work since it was going over the cap.
CS2 and Deadlock are the only 2 games having the same problem, i've also tried TF2, Overwatch2 and DOOM Eternal, and the only thing they have is that the gameplay feels very slow because of the low fps, i even try to uncap from the settings and on the SteamOS performance overlay (example: TF2[High Settings] main menu goes to around 140-180's fps but in online gameplay it goes to max 40; Overwatch2[Low Settings] the same thing plus low rendering; DOOM Eternal [Low Settings] also low rendering, runs with low fps on the main menu and gameplay wise, but while loading into a save it goes around to 160fps on the waiting loading screen)
####Another little problem to which it mostly my fault:
When i was setting up the log in settings of the SteamOS i accidentaly chose the wrong keyboard language, i'd like to know if its also able to change that instead of just typing "setxkbmap pt" every time on Konsole
And while choosing timezone, i chose the one that is somehow one more hour ahead of my actual timezone (pt lisbon time)
I am deeply very sorry for my rookie mistakes when it comes to tech and such, if more info about my specs is needed, heres a pdf, i own a LENOVO IdeaPad Gaming 3 15ACH6
https://psref.lenovo.com/syspool/Sys/PDF/IdeaPad/IdeaPad_Gaming_3_15ACH6/IdeaPad_Gaming_3_15ACH6_Spec.pdf
####I can always go out of my comfort zone if needed some extra information
(first timer on github as well)