All of that I've done and figured out I needed to go to 100mbps half-duplex just 100 up and 100 down , and TBH I want someone to explain to me why I have to have a limit Every time I choose full it just reads 1mbps when on ( WiFi 6) I get 400 down and 600 up.....Did you disable the wi-fi and Bluetooth?
Won't work with that, it'll just rapid disconnect and reconnect... The default is auto...Set the NIC to Auto Negotiation...