Gets even stranger, lol.
Set up a 'Guest', and put the 3 dots on there (5G), all great. Adjusted my normal 2.4G to 20, all good, dots still on 5G. Decided to choose option to hide SSID on 'Guest', guess what?, lol, yup the dots all jumped back to 2.4??? WTF??!! Unhid SSID on 'Guest', dots...