So the V6 gets its internet connection through your homehub. Meaning two questions are pertinent..
1; Do you have any problems with your home broadband (ideally over a wired Ethernet connection)?
2: How is your V6 connected to your homehub? I'd presume WiFi, if you've not said otherwise.
On your V6, follow Home > Help & Settings > Settings > Network, and the connection status is reported, including your WiFi signal strength if appropriate. What's shown?
Do you have problems with any other streaming apps or OnDemand programmes? They're all using the same 'net connection.
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