condenser dryer not drying as well as normal venting?

we bought a couple of months ago a hotpoint aquarius ctd00 condenser dryer, and my wife has been complaining that eg it takes twice as long to dry anything, and even when you get the items out they still dont feel totally bone dry like they used to in our old creda reversair,
that was 10 years old and vented out the window.
should this be like this?
is there a problem?
what would the manufacturers say?

your help in this matter is appreciated........David.