Looks and works great!
With a WMR headset you do need to use the none beta of "Windows Mixed Reality for SteamVR".
Also could not get the borderless mode to work in WMR. Got a big square black texture in front of the car.
But had no issues with running in windows mode.
The sharping filter is great but also the LUT makes the color looks better special on a old plain LCD panel like my VR headset got.
Saved me upgrading the headset for better color and higher resolution!
The issue with the big square texture is caused by the forced borderless mode and having the window mode disabled on GTR2 config. Will update the instructions with that note.