What kind of performance/speed issue are you experiencing?
· Tracks take a long time to play
Please try to reboot your Roon Server
· Yes, rebooting helps, but the issue returns after some time
Please try to reboot your networking gear (Router/Switches/etc.)
· No, the issue is still the same even after a reboot
Is there any change in behavior if you try to navigate to Roon Settings -> Library and set both Background and On-Demand Audio Analysis to Throttled or Off?
· No, the issue is still the same
Does the issue happen on multiple Roon Remotes (controllers) or just one?
· Issue happens on multiple remotes
Router Domain Name System (DNS) change
· I was able to change my router's DNS servers but it did not help
What is the operating system of your Roon Server host machine?
· Roon Optimized Core Kit (ROCK)
Timestamp of issue occurrences
· around 18:20 local time while playing david lang album. several times during the last months
Describe the issue
Roon is slow, stops playback and sometimes looses all playback devices. This affects local library as well as Qobuz library. Setup has not changed over years so I would sort out general network related misconfigurations.
Describe your network setup
Fibre to home - Fritzbox Fibre - Ansuz Switch - ROCK - two Naim endpoints, one KEF endpoint, two roopiee endpoints, apple devices for control, Unify network
We have reviewed the Roon logs around the times you mentioned (18:55 and 18:57 local time), and they clearly show what is happening.
Roon Server is losing connection to your endpoints due to network routing and multicast issues (the logs show multiple “No route to host” and “Connection refused” errors at those exact timestamps).
Since your setup includes a Fritzbox, a Unifi network, and an Ansuz switch, this is likely related to how Multicast (mDNS) traffic is being handled or blocked over time.
To isolate the exact cause, I would recommend the following troubleshooting steps:
The Bypass Test (Isolating the Switch) Sometimes, specific network switches use flow control or energy-saving protocols that can eventually interrupt Roon’s device discovery protocol (RAAT). Please temporarily bypass the Ansuz switch. Connect your ROCK and at least one wired endpoint (e.g., one of the Naim devices) directly into the LAN ports of your Fritzbox.
Check Unifi Multicast Settings In your Unifi Network controller, please check the settings for your local network. Look for IGMP Snooping and Multicast DNS (mDNS). Depending on your exact Unifi topology, these settings can sometimes aggressively filter the traffic Roon needs to see your endpoints. Try toggling these settings (if they are currently ON, turn them OFF for testing, or vice versa).
Thanks. After turning off igmp snooping in the ubiquity network and a ROCK restart things seem to be better since 2 days. Will report back, if the issue arises again. I wonder how this can happen since I did not touch my setup for at least one year and things were going smoothly even with igmp enabled.
Many things can cause you a problems with network.
For example your router could have been updated with new firmware which has altered algorithm for IGMP Snooping feature. There are a lot more things to count other than this.
Let us know please if your set up is going stable or not after some time.