Noisy Skeleton (Video)

Here is a video of the type of noise I am experiencing. I was not wearing a jacket when testing and my arms were clearly visible. When my arms are far apart, the tracking is very smooth and there is almost no noise. But, when I put my hands close together in front of my stomach, you can see the wrist joints flicker dramatically. Even the elbow joints sometimes screw up. Likewise when I touch my shoulders.