... and then a few days later I changed back to default because all
other devices were having intermittent connections issues. Now the
Chromecast seems to mostly work but my wife can't cast from her phone
but I can.... and the Fetch supplied by Optus...
This worked for
mehttps://www.googlenestcommunity.com/t5/Speakers-and-Displays/Google-Home-and-Optus-5G-Nokia-Fastmile-Router/m-p/63742Log
into the router at 192.168.1.1 (login details on the bottom of the
device), go to Network / WiFi Network / 5Ghz...