TL;DR of the post, generated automatically.

OP's Wiggle 2 hair physics keeps jerking in random directions on a dense hair-card setup, and they're asking whether to switch to IK Rigify bones.

• The problem: The bones keep moving sporadically in different directions.
• Already tried: Applying the hair presets, adjusting friction, bounce and radius, and rigging the hair with more bones. None of it worked.
• The question: Whether to use IK Rigify bones instead, or whether something basic is being missed.