Any avatar with Marshmellow PB post patch is good example of this local jitter and does not show up in a screen recording using OBS. The issue seems to be tied to frame rate and at 60 fps locked it functions normally, however above that its appearing to jitter extremely fast while locomotion moving. Can only observe this behavior in first person POV. I did not notice this before but maybe im just crazy. Either way there is a issue.
Edit: I Had thought this behavior wasnt showing in a mirror but upon checking again today, i can see it now at higher frame rate. my thought is maybe something with recent fix on physbones may have made a new movement bug with resting colliders.