Hi there, the link to the video seems to be broken for me.
Some candidates for noise in your simulations:
Having very stiff sliding attachments. (try to be conservative with attachments in general -- only use them where you really need them) 1 x 105 might be a good start for sliding.
High contact stiffness on the zTissue. 1 x 106 might be a good start for contact stiffness.