App Performance, or lack of!

No reason why it should be blocked...

My thoughts are it’s either something running on your mobile device, or an issue within your local network - as mentioned earlier.

It is quite difficult for anyone ‘external’, without access to things on the LAN, to precisely know why the SSDP multicast ‘discovery’ (part of the UPnP protocol) packets are not transversing between your Sonos controller App and your Sonos speakers, but that’s where you likely need to concentrate the troubleshooting.

I’m a little surprised that the Sonos Support Staff were unable to pinpoint to you where the issues may lie with your diagnostic submission reports etc. It might be best to go back to Support and perhaps get a Level-2 engineer involved and (if necessary) provide them with temporary LAN access to troubleshoot the issue under your supervision and hopefully get the issue resolved that way.

I did get a call-back from Sonos and went through screensharing with them as well… nothing.

At the moment I`m testing it with 5Ghz disabled all together on the Wi-Fi, but it`s still lagging a lot and slow to populate the list of devices.

I`ll just use the controller on the desktop and see how things perhaps change in the future. Like I mentioned… everything works perfectly from my desktop, so i highly doubt that the issue is the network. But I have looked into every suggestion on that front still and found nothing wrong.

Starting to see the same behaviour again with only 3 of 7 devices appearing in the Sonos App when the Wi-Fi has 5Ghz disabled. App very laggy. All still perfect from the desktop.

Fingers crossed that they can figure out why, one day...

Are PING times reasonable?

I just ran a 2 minute long check frrom my iPhone using Net Analyzer to ping the Play:5 whilst it was playing and it averaged 6.9ms, with a max of 9.4ms and min of 3.1ms.

Pinging outwards to Google gives me an average of 10ms, so i`d say I should be pretty happy with that.

The ISP Activity monitor on my UDM-Pro usually reads 3-4ms.

By the way UDM-Pro does not support STP. Yes, I know that there is an STP option in its setup, but this sets the default for downstream Ubiquiti switches. I mention this simply to prevent issues for other users who assume that UDM-PRO supports STP. If you were having storm issues, you wouldn’t have these low PING times.

An interesting update:

Was just on the phone again with Sonos support and they confirm that they have been seeing this behaviour since 2-3 weeks ago and confirm that they are investigating and working to resolve issues with the App(!).

They have been able replicate the behaviour on their own devices.

Fingers crossed for them figuring it out and coming up with a solution fairly soon.