I have a 400mbit/s internet connection with videotron. When I do a speedtest on speedtest.net on my laptop I get 430mbit/s download, but when I do it on my desktop with a ethernet connection conencted with cat 6 cable on a gigabit port, it gives me around 180mbit/s download speed. I even bought a new gigabit PCI express network adapter to see if my motherboard adapter was the problem but I still get the same download speed. Can't figure out what the problem is. I want my 400mbit/s download speed.