ok....did most of what nick suggested, although i didn't install nhancer yet as i didn't know whether to use typical..custom...or complete.......

.........................anyways, i discovered that in friday harbour, (installed vancouver+ scenery)...when i fly the ultralite, i still get plenty of stutters when i turn or pan and even sometimes when going straight........but....when, for example, i install the curtiss jenny, (great lookin)....
no stutters....i can turn an pan and all's ok....i used the latest driver too ....the different drivers i tried had no affect on the stutters, so i thought i'd stick with the 178.13..............i tried a different faster card too...no difference.....configured comand prompt as bcdedit /set IncreaseUserVA 2560 ...althought i've got 4 gigs ram, task manager shows i'm using only 1.89ish gigs ram when running....again, i still don't get it

....cheers.........
i7-7700k ....msi geforce gtx 1060....msi z270 gaming m5 lga 1151 motherboard....CORSAIR Vengeance LPX 16GB (2 x 8GB) ram.....