I hope I'm not too late to the party. Short overview: After playing GTA V, I noticed some odd colors in the sky and dark areas, after checking online I noticed this thing called color banding so luckily I have an extra monitor to test the colors out. I saw something like this:
What it should look like
What I get on s2716dg
I found out that it is because of something called dithering. This is because the mix NVIDIA + WINDOWS. Is it a driver problem? Could be. But after installing PopOS thanks to the recommendation youtube video on LTT's channel, I discovered this:
DITHERING OFF
DITHERING ON
This was a breakthrough for me because now I know that this isn't just some random monitor problem, although I cannot seem to get windows to replicated the same gradient smoothing. So I will perform more tests and update the post.