VRR Support

[NeroReflex]

When using steam-session-plus the VRR toggles OFF when the steam side menu is opened for the first time and cannot be reactivated.

In general for screens that does support VRR disabling it is not something we want: instead it is much better to limit fps because that will feel much smoother to the player even at low FPS. VRR 30fps and no VRR 30Hz is a clear win for the VRR in general feel.