Try a reboot to see if the Hub can renegotiate a better connection using this method ...
Switch the Hub off using the small switch on the rear of the Hub next to the power cord and pull the PSU plug from the wall socket.
Give it a good 5 minutes put the plug back in and switch the Hub back on.
Allow the Hub a few minutes to fully restart then try your connection again.
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BT Smart Hub 2 with 70Mbs Download,18Mbs Upload, 9.17ms Latency & 0.35ms Jitter.