Hello @Etaash-mathamsetty, 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/3521#issuecomment-1041016946.
proton experimentalx1 2022-02
I am using proton experimental using heroic games launcher, and there's no vibration when I am playing in rocket league.
(vibration is enabled and at max strength)