@DukeCaboom,

Before you do anything, make sure that your Deco has indeed switched backhaul methods to the Ethernet cable; it is possible that the Deco did not switch backhauls and is still connected wirelessly. For most of our Deco nodes, you can identify the source of the backhaul connection in the deco app. If the Deco has not switched, replug in the satellite deco's power, as the Deco will automatically scan wi-fi channels and declare a backhaul method when booting.

From Your PC's network adapter settings, you should be able to identify a field name "Link Speed" or something similar. This stat will tell you what speed the PC is capable of connecting to the network with, given its current wiring and infrastructure. If the speed is not 1000, try to change the ethernet cable to your PC.