@Quentin_in_FranCisco, I’ve moved your mini-thread here where it has a better chance of being resolved and it won’t take over the original thread.
In order for Roon’s @support team to better assist 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 they can have a clear understanding of how your devices are communicating.
I realise that much of that info is in your previous posts, but if you could collate and add to it if necessary, it would help.