First: Sometimes the character bodies can freeze, while the hair and clothing continues to move normally. I've seen this in Vickie quite a few times, and Stephanie once. If it does it while they are walking/free moving, the body freezes its pose, but moves with the character while clothing and hair keep animating in the expected manner. If the character is in a pose (I.e. Vickie sitting in the hot tub) the body freezes in a position, while the hair keeps looking around.
Example: https://i.imgur.com/1WhiKJ6.jpg hair and bra would move head and body frozen. Ive seen this both in playthoughs mucking around with the console and in 'clean' playthoughs.
Ive also noticed that sometimes when I see it happening, if I turn so the glitched character is out of the players POV and then look back its fixed, if I look away and back again, the body is frozen again. A save/load will fix it. When it happens to Stephanie while she's dancing, its hilarious because the 'mannequin' thrashes around like a pinata.

Second: Body/hair detachment when using the camera.
https://i.imgur.com/bXjE3Ut.jpg
It wasnt showing up like this on screen, but it shows up like that while reviewing the photos on the camera, and on the files on disk. Nearly did a spit-take seeing receding-hairline-mullet Rachael on the camera the first time. Unsure if it only affects photos taken during an intimacy, or if its just related to general character movement.
I'll poke around a bit more to see if I can get any more specifics to replicating it.