Persistent 'poor connection' message on full 5G signal (ref#LG88YL)

[mark.g0mgx]

What’s happening?

· I'm having trouble with Roon ARC

What best describes your issue with ARC

· CarPlay / Android Auto issue

How can we help?

· I am experiencing freezes or crashes

Other options

· Other

Describe the issue

Permanently displays "poor connection" even on full strength 5G signal.

Describe your network setup

Sky mobile in UK

[noris]

Hello @mark.g0mgx ,

Thanks for reaching out. Can you please confirm if this worked properly in the past, or has ARC never worked at all? What Android or iOS device are you using to connect to the car? While at home, are there any errors in Roon Settings → ARC tab, or does that show as properly working? Is there any change in behaivor if you delete ARC and reinstall it on your mobile device?

[mark.g0mgx]

It was working fine, but now for a few days I get this all the time. I have a Samsung Galaxy S25 Ultra.

Roon works at home, I just looked at the ARC tab and it shows errors as below:

[vadim]

Hello @mark.g0mgx,

Even though your phone shows a full-strength 5G signal, that doesn’t necessarily mean your internet connection quality is stable or ideal for ARC.

Roon ARC connects directly to your Roon Server at home, so the overall performance depends not only on your mobile signal but also on the routing path your mobile provider and home internet provider use between them. Sometimes that path can be congested or suboptimal, even if the 5G connection looks strong.

You might want to try using Tailscale — it creates a direct, encrypted connection between your server and your mobile device, bypassing most of these routing issues. Many users have reported improved stability and fewer “poor connection” messages when using it.