A new SteamVR Beta is out 1.16.1 with some changes that may help performance and smoothness in Flight Sim (for those with the Index or Vive headsets)
Added per-app settings for overriding automatic throttling and prediction behavior. This is useful for applications with particularly poor performance that benefit instead from a fixed lower framerate for an overall smoother experience (e.g. sims). Note: These settings are only available to headsets which use SteamVR’s compositor (e.g. Index, Vive).
Allow motion smoothing to apply up to six frames of extrapolation (was three). Note: This also only applies to SteamVR’s compositor.
Disabled the HTTP request to check for updates when SteamVR is running without Steam.
- SteamVR now passes all OpenXR 1.0 conformance tests on Windows for Vulkan, OpenGL, D3D11, and D3D12.
Testing this now and this is great news for Vive or Index users - lets you lock your frames to something low but still reasonable, like 30FPS. Flying the Alaska Bush Trip (the official one) right now with my render scale set to 100 with TAA on a GTX 1080!! Motion smoothing also seems to work better.