I am have the same sort of problem see information below. The estimate for speed on my line is 55 and 13.2. At the moment the IP Profile is 45.22 and it has been like that for most of the time since I moved on to Infinity 2. Upload speed is 6.52 and the profile is at 20.
@Sageman. Estimate of 55 to profile of 45.22 is quite reasonable. The estimate can't allow for all details on your line; if it is liable to noise you can easily lose that much. If you are lucky, it will improve with DLM; but if it doesn't you can't really complain.