All of them on wifi… Imagine the utter hell of living in an apartment building surrounded by neighbours blasting every Hertz of the wifi-spectrum with hundreds of cheap devices.
Fortunately my place is so small a 100’ cat-5 cable reaches any point in it, so I just use wired. Wifi barely works.
Considering wifi-6, but I can’t figure out if it helps with this type of congestion or not…