[PROBLEM] Airplay stuttering since moOde 9

[TheOldPresbyope]

Try searching issues at shairport-sync Git repo for "Large negative (i.e. early) sync error".
https://github.com/mikebrady/shairport-s...sync+error

Below is one example
https://github.com/mikebrady/shairport-sync/issues/1845

At the end of the example cited, the OP and Mike Brady seem to be implicating the DAC involved---it apparently can accept only 48 kHz streams but advertises it can accept 44.1 kHz streams. Shairport-sync can talk only 44.1 kHz---and multiples of same---so thinks everything is good to go. Oops.

As for @cramcram 's journalctl output, those are some brutal kernel messages involving mmc1 (in the SDCard controller driver) and brcmfmac (in the closed-source Qualcom WiFi driver). I've never seen messages like these in my logs on any device. Not sure how best to diagnose these...a quick consult of the InterWeb™ shows lots of folks taking wild stabs at the causes.

Regards,
Kent