The following posts all relate to bugs where the plex app has gone to sleep or closed, while it is still performing a sync or playing audio.
This seems to affect multiple platforms and so perhaps needs to be accepted as a wider feature to be fixed across all devices.
Crappy Nappy® strikes again? Oh my.
It took a while - and several attempts - to fix Crappy Nappy® on AFTV and Fire Sticks, but it was eventually conquered. If it’s become more widespread this may take a while.
I seem to recall some issue with the screensaver when music was involved - a fiddle with the settings was a temporary work-around, but I can’t really remember what that work-around was. Searching for and investigating those threads and others may lead to the temporary or permanent cure. Sorry I can’t be more specific.
Log Files may lead to an issue more local in nature:
https://support.plex.tv/hc/en-us/articles/200250417-Plex-Media-Server-Log-Files
Drag zip file to message window and drop it.
A blanket approach would be to make sure nothing you have is going to sleep (power saving features, the likely suspects). Beyond that it’s difficult to say.
