Congratulations on your new IWC. Glad the winding feedback is as smooth as you expected.
I suppose it's rather difficult for anyone to comment on the "smoothness" of how a watch feels when winding. It really difficult to express, witness or describe such experiences here on the forum - because what is "smooth"?
One person may think a typical Aquatimer is "stiff" and hard to wind, while someone else winding the very same watch may think it's light and smooth.
That's why diagnosing functional and mechanical issues here is so difficult without inspecting the watch in person.
Perhaps someone with an Aquatimer Bracelet (I assume you mean bracelet, and not a strap with deployant, right?) can comment. If the watch is brand new, I would give it some time to break in - and some of the mechanical aspect of the bracelet mechanism will loosen up and the sounds you describe may go away...