Just make sure the resolution is set correctly under Windows display properties, and the usual settings (32bit color, 60hz refresh) as if the TV is just another monitor - dig into the NV control panel and make sure theres no overscan happening.
If you use "PC" mode on the TV you may get less picture options due to less processing in order to get lower input lag. You can probably set it to Movie mode to make it look better at the cost of input lag.
If you get a green tint over everything, and some weird snow artifacts - it could be the HDMI cable, make sure its not loose or try a new cable - that happens to me sometiems
TV: 65" Sony OLED XBR65A1E Speakers: KEF LS50 LCR Front Stage Subs: SVS PB2000 & PB1000 [B] AVR: Denon X3300W DSP: REW with UMIK-1