https://www.overclockers.co.uk/asus-pg279q-rog-swift-27-2560x1440-ips-g-sync-165hz-gaming-widescreen...Quote
- Refresh Rate: 165Hz (G-SYNC ONLY / GTX 960 & Above)
http://www.tftcentral.co.uk/reviews/asus_rog_swift_pg279q.htmQuote:
One important note people should realise is that if you enable the overclocking feature in the OSD menu and are using a card lower than a GTX960 the monitor will report back to Windows that the maximum refresh rate is only 120Hz. If you disable the overclocking option again, you should be able to select 144Hz without any issue, as that's the native refresh rate supported by the panel. So only enable overclocking if you have a compatible graphics card and are pushing it above 144Hz. Likewise if you use a GTX960 or higher, the new maximum overclocked refresh rate will be available to select, but the next step down will be 120Hz. You will lose the 144Hz setting for some reason.
we always learn new things.
If you Overclock the display to 165 the 144 is gone since this is the HZ that is Overclocked to 165 so it is normal that it it gone. to use 144HZ again you have to reduce the OC to 144 or disable it.
sorry about the first misleading/wrong post