I have not tried your plugin yet, but very cool idea (2.X will have JCM implemented natively as it is very important for G3/G8 models).
I took a quick look at your code, and it looks like you are calculating angles. The DAZBone components you are using already get angles calculated as part of the VaM system, so you can likely avoid this calculation cost in your plugin. Examples:
var rCollarBone = rCollar.GetComponent<DAZBone>();
Quaternion2Angles.RotationOrder rCollarBoneRotationOrder = rCollarBone.rotationOrder;
Vector3 rCollarBoneAnglesRadians = rCollarBone.GetAngles();
Vector3 rCollarBoneAnglesDegrees = rCollarBone.GetAnglesDegrees();
These angles are actually used by the Triax skinning system that was recreated in VaM, so it follows all DAZ rules for how angles are calculated. The RotationOrder is important to know which is the primary and secondary axis. Most bones are XZY on Genesis 2 figures, but some are odd like the collar, shoulder, and hand bones which are ZYX. Forearms are YZX. And feet are XYZ.
The calls to GetAngles just return values that were calculated already on the skinning thread so they are very efficient to use.
