I really struggled in thr SRV with the early builds, but was only getting about 37fps. I've upgraded my GPU now (770 to 980ti, roughly double) and things are much smoother, but I think I'll always be prone to nausea while driving around. The skid turns and bouncing are not great. I think part of it is thw very wide field of view in the scarab - in a ship your brain can think that it is everything outside the window that is moving and you are still, but this doesn't happen for me in the buggy.