Hello
I use windows 10 64bit with gtx 1080
and i bought hisense 4K TV 55" k321
and in nvidia control panel let choose 4k how resolution, but native is 1920x1080
in 4k@60hz only at 4:2:0 color
4k@30hz yes at RGB and 4:4:4 color
and i use this cable "HDMI 2.0 Cable Flat, 4K 4096x2160P@60Hz High...