I have a pair of Sonos One SL speakers; They are paired in my living room/kitchen area (same room 20 feet apart), and have a delay between them resulting in an echo or a “singing in a round” effect.
I listen tonmusic less frequently now, it occurs intermittently and when it does I spend 15 minutes searching the internet, troubleshooting and searching for a solution before I give up and resign myself to a music-less sad life. It drives me crazy and makes me not want to buy another SONOS product.