With this tool enabled you can monitor your CPU & GPU ability to support 90 FPS - the charts show-up in VR on the back of one of the controllers
In other VR games it works but when I try FS2, the charts almost immediately freeze then SteamVR shuts down completely. Tried it several times. I'm guessing this is a Samsung Odyssey / Windows Mixed Reality headsets issue since they are relatively new - it probably works fine with the Vive or Oculus headsets.