Spotify Connect2 Choppy sound

New to Volumio 3. Problem with Spotify Connect2 plugin - it sounds like a skipping or fastforwarding CD - chopping maybe five times a second but it plays through in time. Tidal connect sounds just fine. Spotify over airplay sounds just fine. This is a new install but I’ve reinstalled it already, used the older 3.0.7 and 3.0.8 version of the plugin. I’m using it on an oracle virtualbox in windows, if that matters - but tidal and airplay sounds fine. Any ideas? I’ve changed almost all the settings (mixer type, buffer size, etc) to no avail.