Recently i moved my PC to a different room. I went under my house and moved the Ethernet cable. (Both rooms are under 25 feet from router.) The Ethernet cable worked fine in the other room. Once i moved it to the new room i only get 500Kbs instead of my normal 13Mbps. However when the cable is above ground it gets normal speeds. Ive used 3 different cords and the same thing has happened to all three. I dont know what to do next.