Buffering on Sony TV

Hi all,

I’ve been using a Ugoos AM6B+ with CoreELEC to play Movies and Shows from by remote PMS to my TV for a couple of years now and no issues. Due to reasons, I won’t go into, I’ve now setup Plex on my Sony X90J TV and I’m having buffering issues, well that is what I’m calling it, the Movie/Show will freeze for a while before continuing.

Bitrates are only quarter to one half my internet bandwidth and only 1080p.

Video Setting:

Adjust Automatically - Off

Home Streaming - Max

Quality Suggestions - Off

Remote Streaming - Max

Version - 10.28.0.3441

Connection - Hard Wired 1GHz

Any thoughts greatly appreciated.

UPDATE: Debug was not on but this is in the log at the time of the issue:

Oct 23, 2025 01:33:56.003 [140415757839160] WARN - [Req#9219] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:33:57.420 [140415772605240] WARN - [Req#922e] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:33:59.646 [140415791295288] INFO - Library section 15 (All Movies) will be updated because of a change in “/data/media/Movies/The Age of Adaline (2015)/The Age of Adaline (2015) Remux-1080p.mkv”
Oct 23, 2025 01:33:59.646 [140415791295288] INFO - Library section 1 (Movies) will be updated because of a change in “/data/media/Movies/The Age of Adaline (2015)/The Age of Adaline (2015) Remux-1080p.mkv”
Oct 23, 2025 01:34:01.722 [140415772605240] WARN - [Req#9269] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:34:03.122 [140415753251640] WARN - [Req#9277] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:34:03.717 [140415772605240] WARN - [Req#928d] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:34:04.684 [140415755729720] WARN - Error scanning directory, we’ll skip and continue: boost::filesystem::last_write_time: No such file or directory [system:2]: “/data/media/Movies/The Age of Adaline (2015)”
Oct 23, 2025 01:34:04.870 [140415755729720] WARN - Held transaction for too long (/home/runner/_work/plex-media-server/plex-media-server/Library/MetadataRelation.cpp:183): 0.270000 seconds
Oct 23, 2025 01:34:04.879 [140415755729720] WARN - Held transaction for too long (/home/runner/_work/plex-media-server/plex-media-server/Library/MetadataItem.cpp:869): 0.270000 seconds
Oct 23, 2025 01:34:04.880 [140415755729720] WARN - Held transaction for too long (/home/runner/_work/plex-media-server/plex-media-server/Library/MediaItem.cpp:885): 0.290000 seconds
Oct 23, 2025 01:34:04.926 [140415755729720] WARN - Error scanning directory, we’ll skip and continue: boost::filesystem::last_write_time: No such file or directory [system:2]: “/data/media/Movies/The Age of Adaline (2015)”
Oct 23, 2025 01:34:05.072 [140415755729720] WARN - Held transaction for too long (/home/runner/_work/plex-media-server/plex-media-server/Library/MetadataRelation.cpp:183): 0.230000 seconds
Oct 23, 2025 01:34:05.075 [140415755729720] WARN - Held transaction for too long (/home/runner/_work/plex-media-server/plex-media-server/Library/MetadataItem.cpp:869): 0.230000 seconds
Oct 23, 2025 01:34:05.077 [140415755729720] WARN - Held transaction for too long (/home/runner/_work/plex-media-server/plex-media-server/Library/MediaItem.cpp:885): 0.230000 seconds
Oct 23, 2025 01:34:05.105 [140415757839160] WARN - [Req#92b9] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:34:24.802 [140415772605240] WARN - [Req#989c] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:34:26.218 [140415757839160] WARN - [Req#98ad] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:34:28.158 [140415753251640] WARN - [Req#98d1] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.
Oct 23, 2025 01:34:29.559 [140415757839160] WARN - [Req#98e2] Missing X-Plex-Container-Size header. This will fail with status code 400 in the future.

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