Yesterday I’ve posted this in “My VR Settings - G2”:
PS: since different NVidia CPL settings are giving better results with reprojection, this leads me wondering what the same NVidia CPL settings will give if using SteamVR OpenXR now.
I’ve been doing some more tests today with the Index and I came to the conclusion the specific NVidia CPL settings which are working better with WMR OpenXR + Motion Reprojection are not helping at all the Index unfortunately, both with and without motion smoothing. Furthermore, I find the SteamVR motion smoothing not working as expected and far less efficient than the WMR equivalent.
However, I’ve been further exploring whether I can push a little further and I’m please to say on my test system, setting the Index at 120Hz is quite better than any other update rate, and with SteamVR linux_v1.14 and the NVidia CPL settings I’m recommending it is further helping smoothing out the overall experience.
NB: it looks to me the headset refresh rate is uncorrelated to the simulator refresh rate when using SteamVR. In other words, it won’t make FS2020 working harder because of the higher headset refresh rate. However, and this is a positive outcome, it looks to me using 120Hz instead of 90hz or 80hz is also reducing juddering a little. I believe the reason is SteamVR projecting more frame at 120Hz therefore making duplicates less visible because they are displaying closer one to the other.
Update: when I say it is reducing juddering, it won’t remove it when looking side ways. However when just rotating the head in the cockpit it is barely noticeable and when translating the head, it is a little bit lower than when using 90hz or 80hz.