Ok chaps I bought dirt 2.0 on steam and it ran like dogs do do so I bought the oculus version and wow what a major improvement. I did however still had a slight stutter every 2-3 seconds. I managed to fix this problem by unplugging one of my HID controllers whilst in the game. Now it runs butterly smooth but what I have not tried yet is to do the same thing with the steam version as I had to uninstall it from my SSD to make more room. Can anyone here try it on these steam version to see if it helps at all?