Reinstall Fallout 4.

Download that mod that lets you skip the intro, a couple of weapons, and some new creatures.

Any physics bones seem to be broken on dresses and long coats causing them to get rigid and bunch up around my character's waist.

None of the NPCs suffer from the problem.

Spend the entire day trying to fix the problem to no avail. Discover it only happens when I adjust the weight triangle during character customisation.

online censorship shit means I can't get at the gooners that'd know how to fix this 'till I set up a VPN.

I'm not using any custom bodies or skeletons so I don't know what's causing this.