Hi guys. I have a brand new Asus PG279Q monitor that I just replaced a year old PG279Q with yesterday. They are both doing the same thing, so I don't think it's actually the monitor. I have tried multiple displayport cables, gpu drivers, and even exchanged my 1080 ti for a new one, and also bought a new MB, CPU and RAM. Nothing helps... The HDMI port doesn't have these problems but it won't utilize my monitors 165hz refresh rate and/or gsync. Please help me guys, not even Asus has a clue what could be the culprit!
I opened this new account just to give you my thoughts about this monitor. I have it too and it does the same with me as well. If you have to do something in bios, use HDMI cable because HDMI cable doesn't flicker at all. Only the DP cable has this issue.
When I format my pc, I use HDMI cable till I have installed everything then while being on desktop, I change from HDMI to DP cable.
I have been trying to find out why this monitor has this problem but I could not find it. Asus is helpless.
The only thing that came to my mind is this. The monitor has high refresh rate and because the startup screen doesn't really support more than 60hz refresh rate, the monitor is flickering by trying to get 60hz but it can't. It does flicker many times while the pc moves on. When it gets to desktop, the monitor can accept the screen size and then show the picture. For some reason DP cable and refresh rate of this monitor are not working well with startup logos. It could be the startup screen is not made for dp cable that has high refresh rate.
Try hdmi cable and you will not face any problem at all.
You don't have to use hdmi cable all the time, only when you want to go bios or install windows. Once you're on desktop with all drivers installed, change to dp cable.
Hopefully this help.
Edited by S0ul1984, 25 July 2017 - 05:20 AM.