What source are you playing? Does this happen when you are playing to a single Sonos speaker or when you have all of your speakers playing as a group? Are your Sonos speakers running on WiFi or do you have a Sonos device wired for SonosNet?

If you want to work on it yourself start here:

https://support.sonos.com/en-us/article/improve-your-sonos-products-wifi-connection

https://support.sonos.com/en-us/article/understanding-the-network-details-section-in-the-sonos-app

https://support.sonos.com/en-us/article/reduce-wireless-interference