Things are a bit ropey at the moment. Most worrying is the general disinterest Sonos has shown in the mess they've made and why it happened, they rushed out incomplete alpha software as a general release just to allow their headphones to be released on time.
Not a premium experience and still not fixed.
I recall dealing with a lot of connectivity issues when I was doing ISP support stuff but hope it had moved on a little, seems to have gotten worse if anything.