Playlist will not complete, BubbleUPnP, Minim, Synology

[steen]

I thought at first it was maybe my google chromecast audio, but the same experience happens with my Denon.

My setup.
Xpenology NAS
minimserver latest
bubbleupnp server latest
netgear orbi mesh

openhome renderers:
chromecast audio
denon x-4100w

control points:
android htc phone
android samsung tablet
linn kazoo on windows 10 PC

My main thing I do is open bubbleupnp app then have it generate 50 random songs from my library. the random gen is fine, adding to playlist is fine, and playback of first song is fine.

Where the problem happens is that randomly, out of nowhere, a song will finish and the next song will NOT play. sometimes it will play 11 songs.. sometimes 3 songs. i then have to hit the NEXT button on bubble then hit play.

I think I may have narrowed it down to minimserver and am curious what options I can check or what i should be looking for in the logs? or is the the log itself that might be causing the issues?

my minim install is completely stock with no tweaks and i just have one shared folder on my NAS volume where the minimserver runs. this issue is really driving me crazy.