Use the Steam default first, then stable, Experimental or Hotfix only when the game’s evidence supports a change.
Step-by-step checks
1. Start with no forced version
Remove old launch options and let Steam select its supported default. Test after verifying the game files.
2. Try current stable Proton
Force the current stable release for this game only. Do not change every game globally during diagnosis.
3. Use Experimental deliberately
Test Experimental when a recent title or documented fix requires it. Treat Bleeding Edge as untested and protect saves first.
4. Check anti-cheat and launcher limits
Some games fail because a launcher, DRM or anti-cheat component does not support Linux; changing Proton cannot always solve that.
5. Record the working state
Note the game version, Proton version, driver and launch options. Future updates are easier to diagnose when the last working combination is known.
When to stop
Back up local saves before deleting a prefix or testing an unverified build. Do not disable account or operating-system security to make a game launch.
What to tell an expert
Share the device model, operating system, exact symptom or error, when it began, what changed beforehand, and which checks you completed. Do not send passwords, one-time codes, encryption recovery keys, or unnecessary personal files.
Official reference
This Supportia guide was prepared with current official guidance as a factual baseline. Interface names can still vary by device and version. Open the official reference.
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