As you are using a wireless home mesh network system with more than one WiFi access point/hub, I would personally recommend that you perhaps switch your Sonos system back to running on SonosNet by wiring just one standalone Sonos device to the mesh primary hub only… do not wire Sonos products to the satellite hubs.
Also ensure that the wired standalone Sonos device (Speaker or Boost etc.) is not set too close to the primary hub/router… ensure it is at least 3 to 4 feet away from it.
If the 2.4Ghz and 5Ghz WiFi bands are separate in the mesh setup, then try fixing the 2.4Ghz WiFi channel to a non-overlapping channel, like channel 1, 6 or 11 for example and set the channel-width to 20MHz. If the two WiFi bands are combined, then try to discover which channels the hubs are using (network scanner software/Apps can sometimes assist with discovering channels in use nearby).
In the Sonos App set the SonosNet channel in ‘Settings/System/Network’ so that it is at least 5 channels away from the local 2.4Ghz WiFi channel. So if the primary router is using WiFi channel 6, for example, then set SonosNet to use either channel 1 or 11.
Finally, when all Sonos devices are up and running on the SonosNet signal goto ‘Settings/System/Network/Wireless Setup’ in the Sonos App and remove/reset the WiFi credentials as these are not required with SonosNet and it will prevent your devices hopping between the SonosNet signal and the mesh WiFi signal.