So I've had this problem for months now with no resolution from BT. I currently own a HH5 with the infinity 2 and latency on my Xbox is so bad and when downloading big files, speeds tend to fluctuate. It normally dips in and out between 20-50 but I've seen random spikes to 0 and even in the 100s.
I know this is a very vague description of the issue, but BT weren't very helpful, I've spoken to multiple BT employees over the phone saying that it was a problem on their end, a problem with the exchange box, a problem with my openreach box, wiring to my home, and multiple setting changes and resets to my hub. None of this advice has helped my issue.
I had an engineer round who did improve my speeds by tweaking with the master socket, but the issue still remains. Can anyone help me?