I've had this issue since steam updated to patch 1.3, I'm now running patch 1.4 beta so the beta has nothing to do with this bug.
No mods of any type
Not using any textures from nexus site basically vanilla mode.
50% of the npc's i approach will have floating hair or their head or around the face area, This will appear over my head while i talk to them and when i circle around them their hair will move around and around them and or my character.
I've tried deleting my ini and prefs.ini (only the 2 in my saved game area) to anew them through launch.
I've never altered the default ini, I just cant figure this one out and this has been an issue since steams 1.3 patch update.

Any help would be greatly appreciated
thanks

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I had this problem, it may have been related to the physics bugs. Once I got enough "fixes" (Acceleration layer, frame-rate limiter, messing with driver settings) to stop random objects from trying to kill me whenever I opened a door, the "floating hair" people just went bald.

So, it's kind of fixed, not really, though, if you can find a combination of "phsyics fixes" that works for your (ENB patch and priority fix and some others caused too many issues for me).