Custom Resolution Utility (CRU)

[ToastyX]

(05-18-2015 09:45 PM)Eagle Wrote:  I get flickering on the screen when I select 144hz, that's my problem. Hence the reason I tried your tool, but my main issue here is that the Asus ROG PG278Q is optimized for Nvidia cards, not AMD, and it dosen't support the screen since Nvidia dosen't do it the right way according to AMD.

You should be able to get 120 Hz without any changes, and people have reported success at 144 Hz with the timing parameters you posted. If 144 Hz still flickers with the "Custom extension block" option, then you might have a low-quality cable or adapter. The PG278Q comes with a high-quality DisplayPort cable, but AMD cards have mini DisplayPort, so if you're using a different cable or an adapter, that might be affecting the signal quality.