I was just poking around my wifi settings and found that my router had reverted to channel 1 so as @Piney mentioned, my router ( xfinity ) has some type of autoscan to select channels. Probably each time it boots up. There is an override so I can nail down which channels to use. I may use that in the future. The problem with the auto channel select is that what the router sees as best channel selections can be way different from what a controller 90’ away sees. Bottom line is that the RF shielding has been doing the job of removing interference for some time. The RF shielding will probably only work if the interference is coming from roughly the opposite direction of your router. All I can suggest to @gaustin for a first step is just set the router to channel 11 on the 2.4ghz band and see what happens.
