Apple TV 4k Video Freezing Temporarily

[PCFan]

I noticed that Netflix stuttered the video for about half a second twice already. During both those times the stutter in the video happened about 1 minute before the end of a Star Trek season 1 episode 1 and about 1 minute before then end of Curious George A Very Monkey Christmas. I replayed those parts again and it did not stutter again. It's like the video does a quick freeze then skips a few frames to catch up with the audio but the audio continues to plays normal. Is something most likely going on in the background in Netflix during those stutters? Also I was watching Small Town Santa through Netflix and in the beginning of the movie where it shows a toy train set with the train moving on the track, it did what seemed like a 1/16 second stutter in the video. When I replayed that part after watching the movie the stutter at that particular spot did not happen again. There is no Quick Start setting for Netflix in the Apple TV's setup menu, so I'm stuck with only one streaming method Apple uses for Netflix. This is similar to those stutters I encountered near the end of 2 movies I watched through iTunes when I had Quick Start enabled and one stutter lasted for about a second then skipped frames to sync up with the audio. I've never experienced something like this on my Apple TV (4th Gen) which I sold but then again only shortly before buying the Apple TV 4k I started using the Quick Start feature. I have disabled auto updates for applications and the system software but that does not seem to fix the issue. I'm not sure if my Apple TV 4k is defective. My first one that I returned had a HDMI port that would not keep my HDMI cable securely connected. Now I don't know if I should return this one as well and make another exchange.