Relating the speeds, can you do a wired non-console speedtest at http://speedtest.net for me with only that device connected to the internet? This'll give us an indication of the actual speeds you're receiving and we can go from there.
Problems posting the graphics over from my SamKnows box! But currently (05.00am) Sat morning packet loss steep decrease from @ midnight to 0.02% with both download/upload speeds spot on. (219Mb/21.0Mb) Bonded upstream all 64 qam rather than channel 2 dipping back to 16 qam. Will keep an eye on it over this weekend.