SiriusXM - all stations dropping out and skipping.

If all other ‘sources’ are working fine, the issue isn’t with Sonos, but SiriusXM. One question for you. Were the Sonos devices powered off when you rebooted the router? Hard to tell one way or the other from your post. 

Just as a note, Sonos uses a different server / port than the SiriusXM’s other apps, so it’s feasible that it isn’t happening on other devices, but just your Sonos.

Unfortunately, I’m not a subscriber, so I can’t test this to confirm one way or the other. 

The only other thing I can think of is the density of the stream being presented is causing issues for the WiFi connection. The only test I can suggest to test that is a wired (test) connection of the speaker to the router. If it’s successful, then a review of the wifi interference FAQ might be beneficial.

But if that isn’t successful, I’m at a loss, and you’re likely in better hands talking to Support, who has access to data that you and I don’t. 

Smart thinking. But it suggests the problem is ‘upstream’ from the Sonos, so either your router is having trouble maintaining a connection to the SiriusXM port, or there’s something else going on that’s causing the issue. Sonos uses the same ‘plater’ software/firmware for all streams, so the evidence that your other sources are working certainly suggest no issue with either the player, or a standard density connection between your Sonos devices and your router….and given you’ve already wired one device, it pretty much eliminates any potential ‘density’ issues with the stream, at least locally. 
 

A couple further questions, although responding to me might be a complete waste of your time, since I’m no longer suggesting fixes, just random questions: are your Sonos devices S1 or S2? Are they up to date with yesterday’s latest software and firmware updates? Have you communicated with SiriusXM to check that the issue isn’t on their side, since it is only their streams that are showing this stuttering behavior?

The link below shows SiriusXM operational with Sonos.
https://status.sonos.com/?utm_source=embed

Are you by chance sending multiple streams to different Sonos speakers at the same time? By multiple streams I mean different stations simultaneously. If so that could be a SiriusXM account issue.

Huh. I hadn’t considered the possibility of multiple streams to multiple rooms as an option. I’m biased towards a single stream coming in to my router, and then grouping rooms in Sonos software, so the ‘stress’ is inside my network, and not multiple incoming streams.

It’ll be interesting to see the answer. I should stop making assumptions;)

You already performed the below however per your post not in the specific order which is important.

Unplug all Sonos

Check router admin for updates

Reboot your router and let it come back

Note: Rebooting your main Eero should be enough to send whatever changes are needed for the satellites

Reboot your device and connect to WiFi

Check the Sonos app for updates 

Plug in you Sonos and let them come back (wait 5 minutes after plugging in the last component)

Test your SiriusXM streaming 

Update - as a test, i switched my internet to a different service, our starlink we have for a backup service. I plugged our eero into the starlink modem to keep the same wifi name and not having to move all the speakers over and have been streaming SiriusXM for the last day without any issues. I guess that would point the issue with our other service privider, which is CenturyLink and not Sonos or SiriusXM. 

Glad you got your issue resolved. That means that CenturyLink pushed out a firmware update or made some other changes upstream that affected SiriusXM streaming. Why only SiriusXM was affected is still a mystery. One last question was the CenturyLink DSL or Fiber? DSL is less reliable and a slight change can make a difference for in how packets are sent/received relative to SiriusXM.