Is it your "internet" connection that is dropping or just your wifi connection? That is, how is the xbox connected to the Hub and what happens on other wifi connected and ethernet connected devices at the same time?
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John
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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. On VIVID200, Talk Anytime Phone, x2 Mobile SIM only iPhones.