@EEE You have several network change events in the log files.
Connect your server to the network via wired Ethernet instead of WiFi.
Network change:
May 14, 2021 14:35:06.839 [0532] DEBUG - Network change.
Playback stopped due to timeout:
May 14, 2021 14:35:09.218 [6916] ERROR - [Plex for Samsung] [redacted@gmail.com:6uddz0o1yjomt2a6w0ha0cou] Playback error occurred. Reason: BufferingTimeout, Player took too long buffering, stopping playback
