I understand the reasoning behind that suggestion. Unfortunately, it is not a case of the ATV or client not connecting to the channel where HT or VHT starts. The problem I've run into appears to be bridging inside the AP breaks after some period of time. If my client is connected to a broken AP, I cannot reach "anything" on the same layer 2 other than the gateway. We've found that wiring the ATV helps but if the client is on an AP with broken bridging, they can see the service, they just can't connect. One temproary solution has been to reboot the broken AP. How long that lasts remains to be seen.
Working with TAC on this; TAC is working with DEV. Only thing not working is AirPlay (or mounting a share from my laptop sitting right next to me).