Video sequence vs audio with sonos amp and computer screen

That’s usually caused by audio processing latency from the Sonos Amp when used with a computer source instead of TV ARC/eARC. TVs handle AV sync correction automatically much better, while PCs often don’t, so try reducing audio buffering/latency settings on the computer and make sure the Sonos input delay is set to “Low” in the app.

Used with an analogue source. Computers using HDMI-ARC or optical will be in sync.