I've generated my dense groom in an external program, however when I try to simulate the hair using a sparse groom the simulate turns out fine, but I get a lot of noise and random flyaways when I use adopt external guides to attach my dense groom to the guides, what can I do to prevent this from happening?

Unsimulated setup with the hair and external guides lining up:

Simulated hair no longer matching guides with exaggerated flyaways:

Thank you very much for any help or insight!