So the problem has been fixed, but I am not sure when or how. I rolled back my drivers to an earlier version which some have claimed results in better performance. It did not correct the problem. I then brought the drivers current and "restored" the original settings via the NVidia control panel. I also brought the SS down to 1.0, disabled reprojection, and set the in-game settings to VR low, to set a baseline. My intention was to analyze the timing. I was surprised to discover the game running at 90fps with only a few hiccups with head movement in those instances where the FPS reduced to any number under 90 fps. I increased graphics settings until I found the limit, and here I am. Reprojection took care of the head movement aberrations.
On lingering issue is that, regardless of FPS or timing, there is a lot of judder ONLY with respect to geometry in the cabin, including the pilot's body.
At the moment, I get an almost-solid 90 fps in stations and elsewhere, except very busy RES sites, on a slightly customized VR High preset with HMD set to 1.25, and SS set to 1.0.
Oddly, any dip below 90 is immediately apparent and jarring. Considering the DK2 looked fluid at 75 FPS, I am not sure why this is. Luckily, reprojection makes the game playable under these conditions.
Some people claim they get 90 fps in stations at SS 1.5 or 2.0, on a similar preset. I suspect they are incorrect; however, this brings me to the following.
If you still have the Problem, i would guess that it could be a graphic card issue.
I recently upgrade my PC from i52500k@4GHz with gtx980ti to i7700k@4.4GHz and had even with the old config no such problems. The only diffrence for me is, that i could use 1.5/1.0 instead of 1.0/1.0 without great sideeffects.
I cant imagine that my Windows 10 makes the diffrence.
Have you ever runned the usual Benchmarks for you Graphic-Card ?
- Unigine Heaven and Valley
- 3DMark
and verified that your Graphic Card is in the normal range of other gtx1080 Graphic Cards ?
Have you checked the eventlog of Windows if there is some suspicious Entry with errors under System or Application ?
I haven't checked any of those things. That is my task tonight.