Quote Originally Posted by Siuling View Post
I don't think it's the ISP, just try playing another online game and it's clear connection isn't the problem.
The reason that the connection is so patchy is because BT count it as a P2P connection. The exact same thing happened with Rift in beta except it was much more widespread so it was solved much earlier. It can be easily fixed by Square getting in contact with BT which is exactly what BT support suggests when you contact them.