A lot of the new 4K TVs by default have some 'video enhancement' processing steps turned on by default which ends up making everything look fake. If you go into the TV settings and turn all of those things off it should make the world look more natural.
this processing can create desync issues where the audio is in front of the video by just a bit. this creates a lip sync issue which makes people feel the audio is dubbed over and can tear you out of suspense of disbelief. but i don't think that's what they mean here. rings is just bad acting - or rather, bad direction that forces bad acting. i have no doubt the actors are capable of much more than what they're being confined to.
