Skinned Mesh animation is, wobbling?

I am currently developing a game with custom skinned mesh rigs, and we’ve stumbled upon this weird “wobbling” issue with the custom character’s animations. We have rigs set aside for animation testing, and when tested don’t seem to wobble at all.

We use Mixamo to animate our rigs and it hasn’t caused any issues so far. But when used on this character rig it seems to wobble and I don’t know what is the cause of this.

Video of the wobbling animation (sorry for weird video aspect ratio)

Workspace hierarchy of character
Screenshot 2024-06-01 031837

I want to boil the root cause down to maybe that it is the WeldConstraint.
For extra side notes, I created my own animate script that replaces the roblox default one.

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