And what Hub model is it?
Have you tried splitting the SSID into one for 5GHz and one for 2.4GHz and connecting just on the faster 5GHz frequency?
See this re wifi
https://www.virginmedia.com/help/wifi-max
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John
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I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired, 1 WiFi, 1 on PA) Hub5 in modem mode with Apple Airport Extreme Router +2 Airport Express's. On 250Mbps, Talk Anytime Phone, x2 Mobile SIM only iPhones.