Hi Carl.
We found DCP's made with 2.11.22 and 2.11.24 creates sync issues.
Issues with DSS200 yes, but we only had a few of those, so we never got a full report of symptoms before the issue was fixed.
The main issue was on Barco ICMP (v1.2.7.10.17247).
The symptoms are jumpy/freezing play marker on the ICMP player that corrensponds with what happens on screen (jumpy image/audio). This creates a sync difference between image and audio, resulting in a ~300-500ms sync issue for the rest of the playlist (!!!) (including DCP's that are made using stable or other software/hardware).
How to fix: Reboot ICMP Media server (rebooting ICMP only is enough).
Interestingly enough, the DCP's plays fine on Doremi IMB/SV, DCP2000, IMS2000.
Best regards, Jonathan
PS. Always use stable version in a production environment ;-)