Master Controller: snapping from pose-to-pose

Hi!
I just built my first Master Controller and it works successfully with one exception. It snaps between poses- it is not a smooth interpolation.
How do I get my Master Controller rig to have smooth interpolations in between the key poses?

On the tutorials, I have watched, ex. the basketball tutorial here on Toon Boom Learn, it had very smooth in-betweens. I am not sure what I need to do in order to achieve that. I have included a snapshot as well as a link to the actual workfile.

Here is a link to the actual file if anyone wants to take a look: https://drive.google.com/file/d/12cjTVt3qFpoQWiHj1CavLgf4oZDWwzxH/view?usp=sharing

If you have any questions, don’t hesitate to ask. Thanks!