Yup. The smarthub forces it to be -5 at the end of the SSID, I must say I every 5ghz channel 36, 40, 44, 48 are all occupied by 2+ other networks now where I live. HH6 does not support any other channels. 36 is by far the worse, with 6 Sky networks, great idea (not) that Sky send their routers fixed to 36!
In my office, we have 20+ networks on each of the channels (other than my corp network). So much so, plenty have fallen down to 20Mhz instead of 80.