My XBOX One X runs at 1440p @ 120Hz. No new one yet to see if it works. Its big, bright colors look great. The flex isn't intrusive, I'd call it comfortable. That's great play value. I'm using this monitor on a computer with a GTX2080TI and an Xbox One X. I don't notice any lag at all. But I prefer my computer because of the better card. Division 2 is my lag benchmark. You will not be disappointed. The only negative for me is the stand, it works but there is no height adjustment.
Sceptre C325B-144R: Advanced FreeSync HD Display with Wall Mounting and Tilt Adjustment
94 Review
Dell SE2416HX Screen LED Lit Monitor 23.8", 1920X1080P, HDMI
93 Review
Samsung Flat Monitor Super Slim Design 27", 1920X1080P, 75Hz, Flicker Free
112 Review
HP 24Uh 24" Backlit Monitor 1920x1080p, 60Hz, LCD with HD Resolution - K5A38AA#ABA
101 Review