Experiencing WAN speed issues since day one with Archer C6 Computer directly on modem → 920Mbps Computer via C6 (ethernet) → max 420Mbps WiFi speeds on 5Ghz were ok, as expected for wireless. 2.4Ghz w

Hello! Yesterday I switched to a higher speed connection (should be 400Mbps). The repair man came and tested everything - wires, my PC and router - if I connect my PC directly to the line the speed is