A:AnswerWhat I found is if you do a fresh install of the driver and choose NOT to install relive when you click the relive section in the driver you have no Freesync flicker at all. Also try doing a fresh reinstall of your gpu drivers aswell.
A:AnswerI am running my Xbox One X on it and it does recognize the 120hz refresh but will only do 1080p.
I still recommend using a high speed HDMI cable thou