In the map where we are all using temporary airfields (St Michaels etc) - I was merrily bombing around low in a G50 over Lymphe when everything started to run unevenly - basically as I flew over the smoking airfield. The headtracking was smooth but the landscape was stuttering. Well not stuttering a such - more slowing down and speeding up. The effect seemed to get worse with flak and remained for the rest of the flight until Illusion despatched me for being a pudding and trying to get him whilst he took off (serves me right).
I never had any of this with my ickle 750Ti
I5 6600K, EVGA GTX1060, 8GB RAM