

I have the same issue when running on ultra and trying to increase the resolution scale above 100% at 120hz.
When downscaling back to 100% ; the black stripes disappear
Running a 3090, AMD Ryzen 5950X 16core 3.4hz with 32gb of RAM. Using a Alienware AW3420DW 34.1" Curved UltraWide currently.
I have sent a ticket to support with my MSinfo & DxDiag + copy of my save file