i've played a lot of VR games and even fast ones, regarding to movement, you either have motion sickness or you don't, if you have it you can train it to some degree. If you don't have it, you can go nuts with movement and most games feel too slow since motion sickness isn't a thing usually for me.
What does trigger motion sickness always and to everyone it's slow and stuttery framerate, that makes you want to throw up pretty gast and it is the reason why everyone after PSVR adopted the time interpolation thingy where if the frames get too low you get the fake frames and if the dip it's too big you get a static screen but attempting to keep the tracking working. It's not perfect and whenever tracking seems wonky or stuttery in a game, the motion sickness starts to creep in and more often than not it's because of framerate.
Performance it's so important in VR, i don't even mind 30fps as a default for most non VR games , but in VR you better keep that 60+ target all the time with no dips.
