[noam87]

I've noticed it too with a friend's TV. Some shows / movies become unwatchable because it's so distracting. -- I think part of it is that many of the artificialities of the screen become too obvious: the lighting, the makeup, the fact that many elements on a set a plastic / CG, oddities in perspective, etc... all of these elements are "fuzzed up" by a lower resolution and FPS, forcing your brain to fill in the gaps -- ironically more convincingly.

Sometimes in art, less really is more. Many modern Sci-Fi flicks fail to achieve that feeling of wonder precisely because they are shooting for too much realism in their special effects, I think. The problem is not CGI itself, but the technology does seem to make it too tempting for the filmmakers to fill in blanks that are perhaps better left up to the viewers' imagination.

[DougN7]

I think you've hit on it. I feel like I'm on a movie set watching the actors when watching 4K, as opposed to getting into the story like normal (can't remember the term for that...)