I finally figured it out! Take the back cover off the Roku TV. Locate the cable running from the main board to the WiFi module. Detach said cable. Everything works great, and there is no Roku WiFi interference on my home network.
Keep in mind that if you run the TV without a network connection, the front panel LED will blink twice every few seconds. There are three ways to prevent this. Remove the LED light from the TV. Connect to the internet using a wired Ethernet cable. Or, do a factory reset, and configure the TV without network access. I did the later. A $20 ONN Google TV 4K now supports the streaming needs of the TV.
I personally would have just let the RokuTV be and still used the Onn device in the HDMI. (can just configure in RokuTV Settings to always start up on the Onn HDMI port).
Some have complained about the interference the Roku AP creates. As such, users are certainly free to do whatever they want to do to their networks. (and to their owned devices in my opinion.)
However, some users find it useful to have multiple streaming devices/platforms available to them in case an issue arises with one of them.
My alternative platform is the manner in which I have my laptops configured (when I am not using Roku), but if I actually needed another device, the Onn would likely be my choice. (even though I am no Google fan). Users seem very pleased with them.
I agree that it desirable to have a backup streaming device. Unfortunately, the Rokus in my house have not been working well lately. I had stuttering and buffering issues with YouTube, random crashes on Netflix, and slow load times with Prime and Max. And this was all happening with an excellent wired and/or wireless network. I also purchased a Tablo OTA streaming device, and the associate app is much better with Google TV. Combined with the WiFi issues and the strange idiosyncrasies of the OS, it was time to move on to a new streaming device. But I have enjoyed my time with the Rokus over the past six years. I just don't want to deal with any potential issues that may arise in their next update, especially since my TVs are getting older, and the Roku software becomes more resource hungry with every iteration.
The onn Google TV has been excellent, and integrates so well with the TCL TV that I no longer need to use the Roku remote, unless I want to adjust the picture settings.
Anyway, thanks for your thoughts.
I just disconnected the WiFi module on the TV without a network connection. This was a TCL 43S433, and only involved removing 9 screws to get the top cover off the back. The other TV (TCL 50S435) uses WiFi and a Roku account, so I will have to live with the hidden access point unless there is another solution.
