Hence my question. If the C5400 is indeed a switch, why are 2 divergent traffic paths, that would not touch each other at all in a real switch, seeming to share bandwidth internall and causing...

If the Archer C5400 is in deed a switch, why is the following scenario happening? Desktop <Cat6> Switch <Cat6> C5400 port 4 <Cat6> Cable Modem - All Hard wired File Server <Cat6> C5400 Port 1 <WiFi,...