Similar issue on my nvidia shield pro 2018 plex player. Server version 1.23.4.4712 on a separate linux Ubuntu computer. Connected through Ethernet 1 Gb. My buffering is most for sound and the worst moments is’s buffering each ~ 15 seconds for 1-2 s.
The ridiculous part is that I just setup my fire tv stick 4K through wifi and is playing fine the live tv without buffering at all (will need to test more and see if the behavior change).
How in that possible, the most powerful android TV device is buffering the plex live tv, and the firetv stick 4k is not?
This problem started a few months ago, and I try to update each time a new version is out hopping to solve the above issues, but no luck.
Hope the plex developers read this, and will fix it sooner than later.
@AliveKiller Did you try disabling audio pass-through under settings and see if it goes away? I also get the buffer Circle but it’s very quick. I think it has something to do with the startup time they have set on the Nvidia shield for live TV. They have it so quick now that it has to do micro buffers. But disabling audio pass-through makes this a lot better. With your Soundbar setup I’m not sure how that would work.