Adrian, thanks for taking the time to reply. Yes, most FLAC streams work fine via web browser, as do internet radio selections via the Naim app. Nothing untoward showing up on the Minim logs either. The same problem occurs with both my Macs and on a Synology NAS, so it’s not a device-specific issue.
Bit of a conundrum really. I mentioned my recent ISP change because I was at least able to get a ‘green’ Minim connection prior to the upgrade, but even then access to the FLAC streams was a hit-and-miss affair, with frequent dropouts or failed connections.
Not a major deal in the overall scheme of things. I just like it when things work.