Few weeks ago i installed Netflix on my 4k+ but I have been observing that audio and video randomly go out of sync and then sync up again a minute or two later while watching 720p content.
It happens every few minutes throughout the movie or tv show
I utterly gave up trying to get netflix to work. Randomly doesn’t work on 2 out of 3 of my v4ks and breaks and requires manually reinstalling every few weeks