I recently bought a used WMR headset.
Forza Horizon 4 and Motorsports 7, which have a window on the Windows MR portal and
enjoy a big screen, really good. However, try the Assetto Corsa and Project CAS series supporting VR,
then the FORZA series will be a wonderful experience if you utilize WMR.
What do you think about supporting WMR for those who like Forza?