[Manni]

Originally Posted by huhn

manni can you do a simple test and see if nvidia output 12 bit even with 8 bit selected as long as madVR send 10 bit (it was like this in the past)

That cannot work at 4K60p. You can't send 12bits (or even 10bits) at 4K60p RGB 4:4:4, whether MadVR dithers to 8bits or 10bits. It exceeds the 18gb/s bandwidth of HDMI 2.0. It might work like this with 1080p, but that's not relevant with 4K60p. The only valid option at 4K60 RGB 4:4:4 is 8bits. This is why you should make sure (using profiles) that MadVR dithers to 8bits with 4K60p content if you dither to 10bits otherwise. Alternatively, you need to dither to 8bits always.