This monitor supports all Resolutions (640x480, 480p, 720p, 1080p, 1440p, 4K) and nearly all features. The only features I have found not to be available for the Xbox One X (I have scorpio ed.) are ""Allow auto low-latency mode", "Allow 3D" & 120hz.
Everything else works. I will try to upload a photo of the TV Details Page later today, currently at work.
But trust me, every possible setting/statement has a Green Check to the Left. It really was exciting to see ALL GREEN.