Compatibility with Three.js

Hi, I recently exported a VRM from Vroid Studio and created an animation with it using DeepMotion. Within DeepMotion the animation works well but when importing back into Three.js the animation it glitchy. The VRM works fine if loading Mixamo FBX animations. See the following GitHub issue I posted which shows screenshots of the issue: https://github.com/pixiv/three-vrm/discussions/1088#discussioncomment-3914025

I'm using the three-vrm Three.js library: do you know why this glitchy behavior is occurring?