The one in our spare room stutters video and audio - the others are all fine. Annoys us.
3/4 or 4/4 - the Wifi extender is only about 5 metres away from it and connected to it EXT
My 2kg WiFi Access Point just sears at my Chromecasts and Homes.
Not seen an issue with 8 Google’s Homes and 5 Chromecasts.