Using a Vizio d55u-d1. Gtx Titan 2013
2160p @ 60Hz 4:2:0
1440p @ 30Hz 4:4:4 / RGB (WHY?)
1080p @ 120Hz 4:4:4 / RGB
The solutions suggested in this thread don't really work, nor do they answer the question.
By creating a custom resolution from 1080p and using automatic timing settings you are...