Cheers for the guide on 144hz Scramz. I used the tool to set it at 143 but Dying light and other games still wont run. And thanks for the specs you used to set up the monitor, I have been searching for settings but came up empty.
Strange, make sure you have it fully running on 144hz by checking Here. I found when i first made the changes it would put it back to 120hz some times.
This fixed my flickering on full windowed games.