I already posted some of this over in the avsim forum, but figured this info could be useful here as well..
As i dive deeper into the world of VR, i figured i'd post some results as I move along.
I've done the same thing for X-Plane 11 in this thread and also for P3D in this thread..
So far the VR experience is best in Aerofly FS2.. Xplane, i cant get the full 3840 res to work without choking the system, so there i run at 2880 and 4x AA, still not bad but not great, while P3D was the sharpest with least shimmering (at the full 3840 res), at least second to Aerofly FS2. But out of the box no tweaking Aerofly FS2 was the best VR experience in town, though at this state not the most complete sim around, but give it time..
First up was actually the newest test I did, i installed the new NYC addon area (to compare with XP11 and P3D's DD NYCX)..
Running Aerofly Fs2 with the rift and now NYC and it is pretty great.. some shimmering but no where near the level of P3D or Xplane 11 so far.
I had to tone down the settings though, even for my system(see sig) and 1080 card, otherwise i was getting jitter, now its smooth, the 2d screen shows 27-45 fps as i fly near the city in the default cessna.
I had to lower the VR scale to 1.50 instead of 1.8 or so.. i lowered the visual settings too..
Texture = high
Terrain = high
Shadow = medium
Buildings = high
Trees = high
Pretty sure, anything higher, especially ultra yielded the jitters..
apparently these results arent typical with my setup, which is the 1080 ftw hybrid + 4.7ghz 6700 + 3200mhz ddr4 cas15 ram.. should be more like 90 i think when read from the 2d display