FreeSync works just fine over HDMI. Can actually tell a difference in PUBG and APEX. However, I was not able to enable 120hz with 1440p. I have another 144hz 1080p LG and the 120hz does enable at 1080p. However I haven’t noticed any difference in gameplay between the 120 and 60hz. Maybe the 120hz will be something available in games in the future, but I don’t think any games actually support 120hz on Xbox. This monitor feels just as responsive as my LG 1ms TN panel.