Hello - I hope I haven't hijacked a thread - but, I saw the title and I am experiencing the same problem - although my download speed is not bad (around 60mbps, which I'm happy with) - I use my internet mainly for gaming and I suffer lot's of lag issues since changing from cable to Talk Talk (house move).
I just wondered if I could try the fastpath profile - I'm not too concerned about losing some download (if that occurs?) more about my ping/latency -
regards.