Shoulder stuck at suboptimal positions during retarget

[knightnemo]

Hi, thanks for your awesome work. I am using holosoma_retargeting to retarget the FineDance dataset to Unitree G1 robots. However, I am observing the current phenomenon:

At some frames, the retargeted frame fails to track the position of the left and right elbows, resulting in the shoulders at weird positions.

Examples:

I am wondering if there is any way to prevent this from happening. My suspicion is that the shoulders are stuck at local minimum during optimization, or that it is related to joint limits. But I am new to this field, so I would like to consult with people with more experience.