Worth pointing out that the BT help pages mention other (non Apple) devices are also affected, naming Xbox and Android phones.
I have always simply disabled 5 GHz as it does not solve any problems that I experience and for me, in the absence of such problems, 2.4 GHz proved superior. When experimenting with 5GHz I did tend to give it a different SSID, simply because it made such experiments more manageable. Interesting, though not surprised (speaking from gut reaction), to hear that using the same SSID causes issues, I am surprised that was BT's default.
