Output Dynamic Range Locked?

[J_Foster]

Is limited the proper setting for a monitor? I thought that was for TV’s that use 16-255 range. It is grayed out and I cannot change it.

[LoneWolf]

Mine isn’t grayed out at all and I’m able to click on it. Unfortunately its set to limited only. Your output color depth however you should have been able to set it to 10bit.

[J_Foster]

Is there a reason I cannot select 10bit? Only option is 422 at 8bit

[Zodiac09]

Do you use a graphics card below Nvidia 20xx?
Is your monitor connected via DisplayPort ?

[J_Foster]

I have a 1070, both monitors connected via DisplayPort

[Zodiac09]

Strange aliasing with solid primary colors on Windows 10

I had similar issues when my graphics card (GeForce 1070) did not support DisplayPort’s DSC feature that allows it to compress the signal enough to cram 144Hz down DP 1.4’s limited bandwidth. I had to drop back to 60Hz to resolve the issue until I upgraded my graphics card to a newer model that does support DSC.

I think this would be the same problem you are experiencing. The problem is probably the missing DSC support on 10xy graphics cards.

NZgeek described it here:

HDMI 2.1 or DP 1.4?

I ran across the following video bandwidth calculator, which is perfect for figuring this out. https://tomverbeure.github.io/video_timings_calculator DisplayPort 1.4 is also known as DisplayPort HBR3, so those are the values you want to look at. The 3 columns in the table (CVT, CVT-RB, CVT-RBv2) are timings for the bits of the video signal that you don’t see but are still need. According to the table, 4K@120 4:4:4 uses slightly more than 100% of the DP1.4 bandwidth if CVT-RB timings are used.…

[J_Foster]

You are correct, thank you! I went down to 60Hz and I can choose 444, 10bit. I still cannot change the Output Dynamic Range though, there is no choice for full

[Zodiac09]

Yeah, LoneWolf said the same.
Im not really sure if this is „works as designed“ or a bug.