So, I have this RX 580 8GB. New.
Problem is, the screen is cutting to black when I set the display to high refresh rates and resultions (above 1080/60 or so).
I've tried a new power supply, two driver versions, new displayport cables, and completely re-installing windows from scratch.
I just switched from another RX 580 4 gb that died, and never had this problem with my monitor (1440 p 144hz).
Keeping the resolution down to 1080p/60 seems to fix the problem, but obviously isn't a good solution.
Anyone have any thoughts?