I use VR (Rift) and I already tried many tracks and can race full grid even in rain/storm conditions at stable 90 FPS. Don't know how you did this devs, it's incredible! BUT on Kansai-track (Suzuka) I drop to 45 FPS with performance headroom "-70%" on the whole track, even when I drive alone in practice session. There must be something wrong, as on all other tracks (Interlagos, Monaco, Brands Hatch....) I get 90 FPS with no negative performance headroom even when racing full grid at rain/storm. And Kansai: huge performance drop and only 45 FPS even when driving alone in rain condition... Must be a bug, right?
Maybe it's the same performance bug of this thread: Terrible performance in VR in rain and night conditions
