I don’t follow Stranger Things, so I cannot speak about the quality of the show, but I clicked on the link to see which settings the guy was talking about and I was surprised about how awful the CGI of that shot looks like. It’s hideous. Looks worse than 10 year old video games. What is that about? Am I going crazy?
It does look terrible in that video, but I watch on a projector and it actually looks good on it, so I think this is simply an artifact of watching a phone recording of a TV.