The current VR plugins don’t have any performance tracing in them. I’d like to see timers for the frame synchronization and frame presenting functions (eg. xrBeginFrame, xrWaitFrame and xrEndFrame). It would help visualization of whether render thread performance is low, or if the VR runtime is blocking for the frame sync.
Another useful thing would be to show the VSync of the VR runtime itself relative to the UE frame tracks. This can help determine if the application is properly synchronized to the runtime.