Hello @WinterFoxH, 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/7317#issuecomment-3287019178.
proton experimentalx1 2025-09
Proton Experimental
The Finals steamid 2073850
Starting for 10 seconds without any windows to pop up, then stops I'm on Linux Mint.
steam-2073850.log