I have two sonos one speakers grouped together, one downstairs and one upstairs.

The one downstairs was dropping out every now & again which was really starting to get on my nerves. I put up with it for a while but eventually enough was enough. I thought you spend all this money for a high end system & it don't work as it should.

Luckily my bro in-law is a I.T technology installer & when he visited I asked him to dive deep, alot deeper than i ever dare to go in my settings & set up.

He did find that something was not quite right when he ran some tests.

We tried a few different things, settings within my wifi router which didn't really make a huge difference. Also resetting the speakers from scratch.

Long story short through trial & error we found that the energy smart meter box that tells you what gas & electric your consuming was the culprit. (Too close maybe)

We unplugged it & powered the unit off, hey presto the speaker is now stable & working perfectly.

My message here is...... I read that these smart meters cannot & should not interfere with your home WiFi set up, because they use an independent system to send info to the receiver  Well just don't believe everything you read because my smart meter receiver is unplugged & my Sonos speaker is now working without a blip (fingers crossed)

What im going to do is move the smart meter receiver away from both the speakers & switch on, see if the issue returns, if not happy days, if it does then it will stay off.

Any interference with any home WiFi set up its worth being mindful if you have these energy smart meters fitted that are sending a signal to receiver.