The neck currently feels very difficult to pose and animate. In the attached screen recording, you can see the behavior I'm struggling with. The controls technically work, but getting clean neck poses requires significantly more effort than expected, and the motion often feels unpredictable.

I'm hoping to identify what rigging approach was used here and whether some common solutions or improvements could make the neck more "animator-friendly". I'm not the original creator of the rig. It was created by my professor, who gave me permission to check and potentially improve it for her classes (witch im gonna take eventually, so it'll make my life easier too).

Any insight into likely causes or recommended approaches would be greatly appreciated.

Link to SyncSketch Video of Issue