Thanks for the report, @Michael_Blair!
To start, may I kindly ask that you please provide a brief description of your current setup using this link as a guide.
Make sure to describe your network configuration/topology, including any networking hardware currently in use, so we can have a clear understanding of how your devices are communicating.
May I also ask that you verify the following:
- Since you’ve noticed this behavior, have you tried rebooting your Core machine, audio zone devices, and networking hardware?
- Is there any antivirus software or firewall active on the Core machine? If so, you can try to disable them and see if that improves things.
Regards,
Dylan