ASUS PB279Q enabling 10bit color

[yoshiknt]

I purchased this ASUS PB279Q monitor

https://www.asus.com/au/Monitors/PB279Q/overview/

it says it supports true 10 bit color, When i try to enable 10bit color in the Nvidia Control Panel for my GTX970 It shows only 8bit color and there is no 10bit option.

It is connected to the display port and display port 1.2 is enabled also.

Any help would be much appreciated

 

[popatim]

you need a true 10bit monitor, yours is 8bit plus afrc (dithering) which only simulates 10bit.
https://pcmonitors.info/reviews/asus-pb279q/