Stops playing (Asus Tinkerboard - no DAC)

Hi guys

I am running the latest version of volumio for Tinkerboard on a blank (no addon cards, wifi dongles etc.) tinkerboard with no 3rd party plugins. Playback stops after playing for a few hours (roughly 4/5H) regardsless of which content, Webradio, mp3 playlist.

Can you please advise?

Many thanks.