My 2013 S with air definitely stiffens up as I raise the suspension. I had my service center look at it because I was "bottoming out" the suspension without hitting the ground over speed bumps at work. Service Center figured out t was because I was on Very High. Switched to High for those bumps and no problem anymore. They told me that at Very High, the car stiffens up analogous to Dr. Frankenstein's monster and gets much more rough.
However, the ability to dynamically stiffen or adjust the dampers on the car doesn't exist. The only control point (that I am aware of) stock is the height.
Yep I've noticed this too. I recall reading somewhere on the forum that it was likened to walking on stilts when set to very high. Frankenstein is a great analogy too!
@lolachampcar - thanks for all the feedback, very helpful.