I apologize for the difficulties you’re experiencing here, @Lyndon_Reid!
To get a better idea of what may be going on, may I kindly ask that you please provide a brief description of your current setup using this link as a guide.
In particular I’m interested in your network configuration/topology, including any networking hardware currently in use, so I can have a clear understanding of how your devices are communicating.
Can I also ask that you please verify the following:
- You mentioned that Roon used to work great - When did you start experiencing this behavior? Have there been any changes to your setup since noticing this? Any new devices on the network, or software that may utilize the network (VoIP, AV, etc)?
- Have you tried rebooting your Core machine, endpoints, and networking hardware?
- Are you experiencing this for all endpoints? If you play to System Output on the Core machine do you still experience this behavior?
- Just to confirm, local files are always playing just fine?
Thank you,
Dylan