AirPort Express slow
Both of my AirPort Extreme routers (Model 1392) are slow. My provider's router has 250Mbps download and 50Mpps upload speed. Both with a LAN cable and with the router's WLAN. To expand my network in the house, I connected both AirPort Extremes to this router with LAN cables. The two AirPort Extreme stations only have 80Mbps download via LAN cable and even less in the WLAN network. I tested this with different cables but found no bug. I would be very happy for help!