Why dont you get your self a non bt brand router mate save your self and hasstle and to others there are some very good routers out there.
Or go even further,and use a Draytek,like I do.
Always online,no disconnections,good latency,and down/up always 74Mbps+/16Mbps+.:)
The wireless side of the HH4 needed a little tweeking
What did you tweak on the wireless?