dictoresno wrote @SZDBLLC do one bad cable brought down the entire speed of the whole network instead of just that one portion? Did that bad cable supply the main Deco? @dictoresno No, it was a cable...

Thanks for everyone's help. I isolated the problem to one bad cable between the switch and one of the Satellites, which happened to be the satellite that most devices are connecting to. I replaced...

David-TP wrote @SZDBLLC Thank you very much for the details. Can I have the model number of the TP-link 8-port Gigabit switch, like TL-SG108? Can I also have the model number of the client that is...

The setup

WiFi

Wired