Plex HTPC regularly loses it's audio configuration

An ONGOING issue with PLEX HTPC is that it REGULARLY (ONCE PER WEEK OR SO) LOOSES ITS AUDIO CONFIGURATION. So what happens is - WHEN PLEX HTPC IS STARTED AND ONE CHECKS THE AUDIO SETTINGS - Audio device IS SET BACK to “AUTOSELECT DEVICE” instead of “HDMI”. HAVE SOMEONE INVESTIGATED THIS ISSUE EVER ?

Not that often but I’ve also seen this happening.