Hello, I just bought Divinity 2 (PC) yesterday and I am having the exact same problem as the OP. I have tried everything:
~ downloaded/installed patch 1.03
~ updated NVidia drivers (including the PhysX driver)
~ Disabled the HDR (check in the config file and the value is indeed set at 0 (zero))
~ have tried tweaking each and every graphical setting
But even with doing all of this, I still have areas of black circular deep shading, like black "blotches" where it's very dark and hard to see. Other areas the graphics are perfectly normal. Almost the entire Farglow area is enveloped in this "black fog".
I'm not entirely technically inclined (LOL), so it would be appreciated if any suggestions on how to resolve this issue were put in simple layman's terms.