Hi,

I would like to know how actor parameters affect tracking. There is general parameters, like gender and height, then there is the body dimensions (BMI, feet, chest, ...) and finally the fine tuning of arms and legs lengths.

Do they all affect the tracking algorithm performance? I would expect that height and the arm/leg length do affect, but I am not sure about gender, BMI, chest size, ...

All those parameters affect the shape of an actor model which is used in the tracking process. The better this model matches a real actor, the more accurate is tracking.