Shoulders jump up and down

[Schakirov]

Thank you for your great project!

I wonder whether it's possible to fix the position of shoulders (body) because it would be more natural.
Currently even in the demos of the project here https://xg-chu.site/project_artalk/ the shoulders move up and down, as if there were a fixed point on the face and everything else rotates around it.

I tried using fix_pose but the issue remained.

[xg-chu]

Head movements are modeled as global head rotations now, so the shoulders also rotate. This work doesn't use data that includes shoulder and neck rotations, so there's currently no solution.

We are currently trying this approach with full-body data that includes the neck. This might solve the problem.