I have been a Mac only user since the1980's and been with VM and NTL before them for the last .... many years...
Safari always works fine - as does.... Firefox/Chrome/Opera.
Any issues you are are having are not VM related but down to the settings on your devices for Safari. What VM hub model is it? Is it in normal router mode - or modem mode?
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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.