The point of the test was to see the speed coming in which shows you are getting the full speed, so this leaves either the router, cable coming from the router or laptop network card.
Can you put the laptop/pc in safe mode with networking and while the laptop is connected, type 192.168.0.1 to go into router settings and switch to modem mode, make sure no other Ethernet cables are in the router, just the laptop/pc Ethernet cable as in modem mode the router will lock on to just one Ethernet connection and we want that to be the laptop. The router will take about 5 minutes to reboot.
Once it has fully rebooted and the laptop had established a connection, try a speed test and see what happens. Just give the laptop a bit of time to connect as sometimes this can be a bit slow.
To return the Hub to router mode just type 192.168.100.1 into the address bar of your browser to access the router settings and switch back to router mode.
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BT Full Fibre 900 FTTP - Asus RT-AX82U to Openreach ONT Box & Asus RT-AX56U with AiMesh setup
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