Nope, everything enabled. And I also had a few puffs of smoke I saw here and there around the track. But I didn't notice any warping of other cars. I never saw one of these smoke-puffs emerge from another car - they just were there when I came around a corner. So maybe the warping only happend with cars quite far away in front of me and I only sometimes saw the result a bit later when I came around. Is your racing PC connected via cable or WIFI to your router?