When using line-in from a laptop as a source, one speaker will occasionally (every few minutes) fade out and then back in. The speakers are near each other, no obstructions between them.
Sonos Play 5, gen1, two speakers
Sources: Macbook Air with Catalina, PC with Windows 10
Connecting cable (source to Sonos): tried several cables
Placement of the speakers: 2 meters apart, between them a wooden TV stand
Sonos app updated.
Any troubleshooting recommendations?