Well What modem are you running? If your running Docis 2.0 modem it can only handle up to like 25 to 30. Reason for this it only has one channel. If you have docis 3.0 modem you should get full speeds what you would expect. Because it has 3 channels instead 1 channel. Think as if it was a highway with a single lane would not get as much traffic as you would with 3.