Jellyfin stuttering over VPN despite fast download speed

[StaticUnit97]

Try just remuxing one of your videos.  To make sure there isn't something wrong with the container.

Code:

ffmpeg -fflags +genpts+igndts -i "/path/to/your/file.mkv" -codec copy -max_muxing_queue_size 2048 -max_interleave_delta 0 -avoid_negative_ts auto newFile.mkv

I'll give that a try tomorrow. Are you talking about the docker container potentially having a problem, or the mkv file(s)?