Sonic & All-Stars Racing Transformed Collection

VAC

Running

Deck: Not ratedOnline via workaround · VAC

Running. Reported to work, but not officially supported. Expect to rely on community workarounds, and a ban risk can't be ruled out.

Setup & launch options

%command%
No special launch option is documented. Try the latest Proton, and check the community notes below.

General guidance only. Per-game launch options aren't part of the upstream dataset, so follow the community notes for game-specific steps.

GameMode

gamemoderun %command%

Feral GameMode: requests performance tuning while the game runs. Needs the gamemode package installed.

MangoHud overlay

mangohud %command%

FPS and performance overlay. Needs MangoHud installed.

Write Proton log

PROTON_LOG=1 %command%

Dumps a debug log to steam-<appid>.log in your home folder (or PROTON_LOG_DIR).

Pick extras, then paste the result into Steam: right-click the game → Properties → Launch Options. Need more? Open the full builder.

Enable GameMode gamemoderunFeral GameMode: requests performance tuning while the game runs. Needs the gamemode package installed.
Enable MangoHud overlay mangohudFPS and performance overlay. Needs MangoHud installed.
Write Proton log PROTON_LOG=1Dumps a debug log to steam-<appid>.log in your home folder (or PROTON_LOG_DIR).
Disable esync PROTON_NO_ESYNC=1Do not use eventfd-based in-process synchronization primitives. Troubleshooting only.

%command%

%command% is replaced by the game's normal start command, so this adds nothing. Tick an option above to extend it.