INTRO: Hi all, I have looked through the other threads and have picked up a bunch of great suggestions, all of which I have tried to no success. I will list them at the bottom.

THE SPECS: Evga 3080 FTW, was a EVGA 2080 super. I900K, z390F mother board, HX1000i platinum modular PSU. The GPU has three separate power cables, no daisy chains. There is very sufficient cooling. 2 monitors, acer predator 1440p 144Hz G-sync and MSI 1080p 144Hz (non G-sync).

THE FAULT: most basic overview, my main Acer monitor will not display a reliable image above 85Hz through display port. G -sync enabled and disabled through NVIDIA control panel. The image will be either or a combo off, flickering on to black and back, or will end up as a 'no signal' screen.

OBSERVATION: the monitor will not go above 85 hz without fault, the other monitor at 144Hz is fine, when I put them both to 1080p and 144Hz, the acer still has a fault. I swapped in my 2080 super GPU and that works fine with both.

The GPU is happy to run two big titles side on each monitor and doesnt stress, only when above 85Hz.
There is no overheating. Everything is secure and has been reseated. Both monitors use DP cables.

ATTEMPTED FIXES: A clean install of most recent nvidia drivers, a clean install of older drivers with the hot patch for ampere and G-sync compatability, these drivers with G-sync enabled and disabled.

Most updated BIOS for mother board.
Booting with one monitor, different DP cables, Different Display ports, re seating the GPU.
Overclocking the monitor.
Fiddled with the monitor settings.
Power cables reseated

CONCLUSION: I think i forgot a couple attempted fixes there, all this happened when the GPU was placed in.
I do need to try another monitor that is 1440p and not G-sync but that's not readily available.

Also, is there a more definite way of disabling G-sync, it's the one bug difference between them..

Thank you all for any help
And please feel free to pop up if you have the same issue


Edit: 2/12/20
Thank you so much everyone. It worked, not a single skip, not a single issue, all in great timing.
Asking what cable I was using was so most definitely not a stupid question!

Cheers for your time, its greatly appreciated.

Cheers
Qudos

Hi, thanks for the reply. I dont see them on that list, I naively went with the quickest ones on amazon: 'Snowkids'.

Could it really have this kind of an impact between GPU's?

Awesome! I just brought a cable matters one, who are on that site. While this cable isnt there directly, the company that sells it lists it as VESA certified.
Plus I may be using 1.2 cables currently.

I'll post in her tomorrow when I try them out, fingers crossed and thank you

Dope, hopefully it will do the trick, thanks for the info