Plex for Android stops sync'd video playback at random intervals

Running Plex on my Samsung Galaxy Tab 4 10.1" (SM-T537-V) and the videos I have sync’d to the 32GB MicroSD HC Ultra UHS-1 card. Tablet is running Android 5.1.1 (lazy VZW has yet to publish 6.x for the tablet).

Every 1-5 minutes (again random interval), the video will stop and return to the video item metadata screen, no errors.

Tried everything (wipe app data, cleared sync storage and re-sync, enable Android Media player under Video settings) and the issue still occurs. This is extremely frustrating to deal with…

Any ideas?