r9 390

I am currently using a Displayport to HDMI 2.1 cable to connect my r9 390 PC to my Samsung TV. No matter what I try I’ve only been able to get 30hz at 4k. Over the last year I’ve tried USB C adapters, HDMI 2.0, 2.1, and multiple displayport adapters and cables. I’ve conceded to using 1080p to...