It can, but requires a MIMO capable device communicating over the 5 GHz band using 802.11ac protocol and using extended channel widths. You may need to edit your hub's settings to increase the channel width of the 5 GHz band to "20/40/80".
But that won't help if you're seeing similar speeds on ethernet devices, since that suggest a broadband problem rather than wifi.
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Andruser is of course correct - but if its the same device getting low speeds when on wifi and ethernet connections I would look for any software on it that's limiting speeds - lots do. Dell's SmartByte for instance, or Antiviral/malware packages, corrupted browser, etc.
Try again with the Hub put into “modem mode” and boot the device into safe+networking mode Test at speedtest.net (not the App!) to your nearest VM server - try on 2 different browsers as well.
-------------------- John --------------------
I do not work for VM. My services: HD TV on VIP (+ Sky Sports & Movies & BT sport), x3 V6 boxes (1 wired 2 WiFi,) SH2 in modem mode with Airport Extreme Router +2 Airport Express's. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.
Could you access your router using http://192.168.0.1/ or http://192.168.100.1 for modem mode . You shouldn't need log in, select the 'Check Router Status' option and paste your 'Downstream', 'Upstream', and 'Network Log' tabs?