My preset for Diablo 3 2 years ago, it worked for this game so...
combine GEM and sweetfx .
Btw you should turn off AA ingame , and if you feel it too bright , turn off Post-Processing .
Download link.
https://www.mediafire.com/view/x5wizmkil2ko868/GD.rar
Too bad Ambient Light eats a lot of fps, 10-15 for me. I like your preset overall.