I have tried both my Xbox one x and Xbox series x on this TV using the 4k120hz HDMI port (#4). On both consoles, HDR was unusable, it completely ruined the colors washing everything out. The tv was set to HDMI enhanced and game mode on, and I also tested all the following combinations of 60/120hz, 2k/4k res, VRR on and off, Dolby vision and regular HDR, and trying alternate HDR modes on the tv(eg. Theater HDR) and trying with Freesync enabled and disabled and local dimming on/off. I also used the HDR calibration app between changes and tried turning on and off dynamic tone mapping. No setting seemed to fix HDR from the consoles. SDR looks great at least though. HDR seems to work fine for my Apple TV 4k, although that also seems to have a separate issue of the Netflix app not recognizing the tv as 4k capable for everything it should (only shows HD banner for movies with HDR, but shows 4kUltraHD for non HDR movies.)