I recently upgraded my internet to a faster speed, but my Xbox LIVE seems to have trouble working. Before upgrading, it was working perfectly fine - I was finding games quickly and my connection was good. But now, I can't even find a game (this is Black Ops 2 btw) without losing connection to the host within the first 5 seconds. My NAT is still open and the LIVE connection test goes through fine. What could be the problem here?