i got the very same issue with my GTX970 and had it before on hd7950, so it is not manufacturer related. got heavy stuters when zooming in on "fresh" map only, if i exit the mission, reopen it and zoom again at the same direction, there will be no stutters. however, if i will zoom at another direction, i got same stutters. so, if i load up a mission and do a full zoom around 360 degrees i got no stutters at all! this is more like texture swapping problem. im using HDD. it is still flyable, but pretty annoying. no such thing in 2.0 Nevada!