This is my usual one, I live about 2 miles from it; but haven't been there in a while. I think Stretch is right that they've improved, but ONLY if you come relatively prepared. My wife didn't have to wait long in Lawrence when my son got his permit, BUT she missed one piece of the application and information, so had to come back.
For my last renewal I pre-filled the form online, and I was in & out in about 10 minutes, including the eye test! Not in Lawrence, but Wilmington (and fairly busy otherwise).