"...I think the only way to escalate this is with a class action suit.."
Roku is deliberately and knowingly harming its customers.
I will definitely participate if someone starts the Class Action.
Sure - the secret menu for wifi I believe is hit Home five times, then up, down, up, down, up
Within that menu I can do stuff like disassociate the AP, turn the RF support off, etc.
As for the dongles, I bought 3 of these - https://www.amazon.com/gp/product/B005OIB6XI/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
They are cheap, and only support 2.4ghz ... but better than having 3 roku's generating massive interference
This would be great but unfortunately I am from the UK where Class Action is not allowed.
I will however be raising to trading standards in the UK if the solutions I have put to them are not agreed/adhered to.
I have a Firestick and Roku hooked up to the same tv. The Ultra interferes with the Firestick so bad it loses connection to the router. When I remove the Ultra and replace it with an Express everything is fine. Maybe because an Express would be lower power.
But even if the Ultra is hard wired to Ethernet, it still broadcasts as an AP for the remote control. This is the interference that is running on the WiFi side of the network. I will look in the secret menu, to see of it can be defeated. I had read another post that this was available in the older models, but not the current ones, so I never looked for myself.
I can't speak for newer devices / firmware, but to keep the Roku ultra from generating wifi interference
1) I use an Ethernet to WiFi dongle as I mentioned before...setting Roku device to use Ethernet
2) in advanced system settings I disable Device Connect. I also disable Control By Mobile apps just in case
3) access the secret menu the way I described before. I go to Resets. I set P2P down and I disassociate AP.
Once I do all that the wifi signal created by the Roku device turns off and seems to stay off