sorry have not yet. still looking.
Just posting to say have not forgot about this. Your sample file is very jittery but i donāt understand why yet. It is also very jumpy on Apple TV. Which is leading me to believe they are just badly encoded files but donāt want to leave it at that.
I appreciate the update, Iāve been actively troubleshooting myself daily - I just donāt want to poke you each day lol.
I am currently watching 13 Hours in Benghazi as a test - which is a Bluray rip rather than a remux with Dolby Vision + Atmos. Itās quite a bit smaller than John Wick in size and bitrate, so far on the Shield itās playing perfectly fine.
Itās made it far enough into the film that Iām confident Iāll reach the credits, the XML is below.
13 hrs in Benghazi.txt (96.6 KB)
If this were a one-off Iād be comfortable with assuming youāre correct about the bad encoding, but since this is happening with all 4K files I have that match the same format (remux) and they all buffer at some point during playback, leads me to think itās something else.
Should I discover anything additional Iāll send it along.
Currently watching The Fellowship of the Ring, remux buffered - bluray rip is playing fine. Both DV+Atmos. One file is 114GB the other ~32GB.
The only thing that makes sense to me based on what Iāve seen is itās a problem with higher bitrate files and potentially a cache/memory issue.
Based my understanding of the log snippet I posted previously regarding Assumed bitrate and detected memory pressure, this sorta makes sense.
We will get to the bottom on this lol.
Are these things you are ripping yourself? orā¦ let sayā¦ having a friend do it?
Iām having a friend do it for me, so I technically canāt guarantee that theyāre perfect. I can only speculate based on what Iāve been seeing.
Well, I was finally able to finish John Wick in a single playthrough (nothing changed on my end) Iāve done 2 beta client updates since this issue was created.
Also managed to resume Fellowship of the Ring from about 20min in and made it through till just before the credits when it started buffering. Iām hoping that was a one-off, but weāll see.
At least this in my eyes proves my files are fine and it is in-fact something with the client - or at least I believe it to be. I get the feeling Iām hitting the bandwidth ceiling for Plex or something.
OK. Thanks for the update on how things are working for you
A couple of weeks ago I looked up your Samsung and your Hisense, and I think the Samsung said to use a High Speed HDMI with Ethernet cable. Thatās not what you used. Then the TV said it only had HDMI 2.1 on two of its ports, not all 4. I was going to ask you about those but passed out trying to make a decent post. Now itās been so long I have no idea if Iām conflating topics.
In the meantime, I came across a few people with heat issues, because itās summertime.
For less than $10 I was able to get a certified Ultra HDMI (2.1) cable from Amazon. The good ones have a hologram your canāt forge.
@kazz3r24 - Have you tried remuxing one of the problem files by using something like MKVToolNix? ā¦ > MKVToolNix Downloads ā Matroska tools for Linux/Unix and Windows
I often find that when I interrogate a file with MediaInfo, it doesnāt always show the correct bitrate, or even show it at all.
When that happens, I will run it through MKVToolNix, and while Iām at it, I will always set the correct language for each track, set an appropriate track name, and importantly, remove any extra tracks that I would never need, such as foreign language subtitles etc.
You may find that after you have done this, you may get a ācleanerā version of the file.
Certainly worth a try 
I did go out and buy an HDMI 2.1 cable to go from the Shield to my TV, the soundbar came with a 2.1 cable that is in earc. What I didnāt realize though is the TV only has the 2 HDMI 2.1 ports like you mentioned, so thank you for that. Iāve rearranged my HDMI ports, so hopefully thatās the end of my issues.
Heat was the first thing I checked, cool as a cucumber.
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Thanks again for the tip about HDMI 2.1 ports. Remuxās seem to be playing flawlessly now - with the exception of the Atmos logo popping up several times in the first few minutes of a movie, but it does go away.
Thanks again! Just had to keep it simple lol.
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