[mothered]

Don't worry, it is extremely slow at first and misunderstands every fifth word. You have the feeling that you are working on an Amiga 500 with Down Syndrome, but this  changes quickly! after a few days it will understand you perfectly

It sounds similar to what my friend experienced with Dragon NaturallySpeaking.

I'm not sure whether It Improved to an acceptable level, but I remember him complaining about the Inconsistency of voice recognition.