I don't think this can be fixed. I also had this, it's the nature of a crappy high-speed 6-bit TN panel. Also, running at 144Hz messes with the contrast which enhances the negative effect.I noticed the other problem. PS I got another DP cable and now it is working fine, the one provided with my monitor is faulty.
I noticed big problem with colors. The thing is, the black shades of for instance wallpapers doesn't look smooth, its looks like steps, I can see all shades of gray/black. Also, some parts of the images look very noisy, like some sort of sharpness through sharpness is applied to the image, if you know what I mean.
I have tried latest official driver as well as the beta one, tried without freesync, tried 60,120, 144Hz modes. Returned monitor to default settings, installed latest graphics card drivers (I have R9 390X). Using DP (the one provided and one from 3rd party) cable or HDMI cable. I tried everything I could think of and the image is still very bad - its like it is in 16-bit color mode (its actually in 32).
Can somebody help me?
This panel is made purely for gaming, don't expect good colors from it.
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