Vertical Oscillations in position mode

We are finalizing our tune on a new custom drone and we are experiencing vertical oscillations when in position and in alt hold mode. We have zero oscillations in manual mode and when I forward flight the oscillations are minimal.

Curious what parameters we can change to tune out these oscillations. Other than this we have the drone nicely tuned for most flying situations.

Here is a link to see the oscillations

https://vimeo.com/wildrabbitproductions/review/668857422/7168b4e025