lol I have an LG Nanocell TV as well and had that advanced setting on and noticed people looked really red. Took me about 15min to try turning that off to realize it was causing it. Thought it was the AI upscale because I literally just swapped out my 2017 shield TV with the 2019 Pro and had the same settings essentially. I'm just gonna wait for the fix in the next update before I turn that setting back on.
The second HotFix may have solved some issues, but in my case has broken the ability to set 3rd launcher as default - bummer - now on 8.1.1 (32.7.301.43)
Thanks, I have a ticket open on this issue. Signed up for hotfix!