Runs good for me, at least in VR it seems smooth but when monitoring frametime it tells me that it's dropping to roughly 70fps (still acceptable) when driving through shadows. So shadows seems to be the culprit, really don't want to turn off shadows and low shaders looks disgusting. As you can see around 0:55 in this video that frametime floats around +14ms when driving through a bunch of trees.
For me with SteamVR (WMR Lenovo), I turned preset to medium then turned ambient occlusion, godrays and bloom off and turned crowd and reflections down and most of the others left at medium and the game runs pretty smooth. I can't bear the thought of running with ground cover off and shaders low, that makes the game look outdated but if it's going to help performance.