So the situation is even more strange ---> the second screen is 6bit too.
How is it possible that with LP140WF1 screen the dithering is on and with NV140FHM is disabled???
Both are FullHD IPS 6bit screens with the same interface!
AMD please FIX THIS NIGHTMARE.....
I tried other versions of driver - and even 15.12 is turning on DITHERING - but just on LP140WF screen!
I even tried EDID driver from ENTECH to `force` the EDID of LP140WF screen to NV140FHM screen, but the dithering is still disabled