Good morning, 

Yesterday I received my new AX300 router and although it is working as in I have WiFi the actual speeds are slower than I was getting via my BT Smart Hub 2.  I have a full fiber 900mbps BT connection that was averaging between 350-480mbps however now with this router connected to it i'm only getting between 200-300mbps.  I purchased this in the believe that my Wi-Fi speeds on both the 2.4 and 5 Ghz would be much faster as well as gaining better coverage.

Please could someone help me with the best settings etc?  I have tried both modes (router and access point) as well as manually setting the expected speeds via the QoS which was a recommendation I found on here but no improvement. I have connected via an Ethernet cable from one of my BT Hubs LAN ports into the WLAN port on emy router and tried playing with the channels etc however these are now back on Auto.  I have also disabled WiFi on my BT hub so there are no conflicts etc.

Right now I am tempted to send this back as I am extremely disappointed with the level of performance 

Thanks in advance