I have both the Samsung G9 and i165 everything works fine with the 2080ti I do get slight flickering in game at 5120x1440, 120hz, 10bit, HDR with G-Sync enabled so I have to currently disable it don't notice much of a difference. Might be the cable extensions inside or the monitor firmware. It is on the latest as of now 1010.2. I also have the older 2017/2018 Corsair one with the 1070 and it doesn't work at all anything past 60hz and it flickers like crazy in Windows. It definitely is the display port extensions inside, works at 120hz directly to video card ports.