I've got a bunch of Google home and Nest devices and various smart
things like lights and power sockets.Some I can say "Hey Google, switch
off the kitchen lights" and it does it and responds with a quiet dong
tone. Others though respond verbally - "O...
I've 12 Google devices in my house I can cast to, all official Google
devices - Home mini's , Chromecasts, Nest speakers and Nest displays,
and I have accounts on Spotify, Apple music and Tidal, and I've set up
several speaker groups in the Home app....
After a week - splitting the Wifi 2.4GHz and 5GHz into different SSIDs
and having the Chromecast devices only use 2.4GHz does fix the problem
with speakers and groups coming and going.So i suppose its fine to close
this.Still not clear where the bug ...
Google support have suggested its to do with having devices on 2.4GHz
and 5GHz Wifi. Some of the devices are Chromecast Audio's which only
work on 2.4GHz. Disabling 5GHz on the Wifi Access Point did help with
the groups being discovered more reliably...