Looks a little slow in responding, when he held the shift down in the vid some keys seem slower than others.
Tis a nice concept, but for that kinda money i would expecting something more impressive
The flicker is through the camera and not in person, the delay was because he was in the options of the keyboard for most of that and the set up things are slow. When you store it all and use it normally or once you confirm a macro it all runs smoother.
Mentioned on their site that.