Dynamic Bone Collider Issues
If hairs, boobs, and other objects are getting dragged or messed up by something, Dynamic Bone Collider (DBC) should be the culprit. It's highly recommended to read this so you'll know how to deal in every issue caused by DBC.
Note: Do this after you changed all of the characters in scenes, and after switching to BP vagina or penis. Since everytime a new dynamic bone (bones with physics) is added on the scene, it automatically became affected by all DBC.
Summary: Open the DBC option. Look if it's inside mode, if not, ignore. Press "All off". Select the bones for penis. If there's multiple penis, look for the one in bone list, where the balls/testicles/scrotum bones are disabled.
-First, type "Dynamic" to the Workspace search bar to locate the DBC.
-Click the DBC then open the KKPE Advance Option (or right click the KKPE icon) to open the setting for DBC
-Oh wait! I can't see the options because the window is too small. Adjust it here
-First check (the bright button) if the Bound Mode is "Inside" .(If it's outside, then it shouldn't cause that much issue so you can ignore it.)
-Now the next step is basically turning all the bones "off" while "turning on" the related bones (mainly the penis bones). But before that, we need confirm what bone should be turned on. This is important on the cases when there's multiple penis in the scene.
-Look for the penis, where the bones for balls/testicles/scrotum are disabled. That should be the right penis. Take note on what are the enabled bone on that section, since it's not always the same.
-So now, you can turn all the bones "off", then activate only the related bones
And yes that should be it. You should now be able to work with dynamic bones efficiently without trial and error on what bones to turn on or off. Thank you for reading this guide. Hope it will help you.