Roon Core Machine
iMac (Retina 5K, 27-inch, 2017)
4.2 GHz Quad-Core Intel Core i7
32 GB 2400 MHz DDR4
MacOS Monterrey 12.6 (21G115)
Networking Gear & Setup Details
Internet > Three Mobile Home Broadband 5g hub (IP Passthrough) > Ethernet > Google Wifi [MESH] > Ethernet > Core (iMac)
No double NAT (this was resolved by switching on IP Passthrough on the Three 5g hub, and the Roon Core reports that Roon ARC has been successfully configured.
No port forwarding rules in place.
Connected Audio Devices
iPhone Mini 12 (iOS 15.7) - via Wifi and/or cellular connection (5g or 4G - also via Three Mobile)
Number of Tracks in Library
166,719
Description of Issue
Roon Core usually works seamlessly on my home network, with the iPhone 12 Mini in question as a remote and endpoint, via the Roon Remote iOS App.
The same appears to be true of the iOS Roon ARC app, when connecting to my home networking, via WiFI.
The issue arises every time I use Roon ARC on a cellular connection (5g or 4g) inside and outside of my home, both walking or driving.
The Roon ARC iOS app plays music briefly (plays a few tracks, if a connection is made at all), but then it loses its connection with the Core, when it will display the UI error message āPoor Connection - Retryā. This problem typically loops from hereon, and connection cannot usually be re-established (with/without toggling cellular access and/or shutting the iOS app down and restarting)
Meanwhile, where this happens, my Core also crashes at the same time. The Roon Core will then require a restart (If this is not done, the UI Home page doesnāt load content, and flashes the roon logo without resolving).
I really want Roon ARC to work - it has so much promise! Iāve battled to resolve an initial double NAT issue in support of it, but I just canāt get it going consistently while on a mobile connection in transit.
Any thoughts / ideas / help appreciated - I suspect that there may be a connection with the mobile device moving from WiFi to Cellular (and vice versa) and seemingly some issues with any changes to - and stability of - my cellular signal?