This is a question I should have figured out the answer for ages ago, but I was having fun playing with the height slider in the AAU editor, giving each character a unique height and whatnot, but it turns out that doing this leads to problems with the H animations. Such as: floating dicks, fucking the air, and so on. Cowgirl seems to work almost no matter what, but most other H positions don't seem to take height into account. So, is there any way around this? Or do I have to stick with the three standard heights for them to sync up in play mode? (The same way that I can't give a character extra wide hips without them clipping through the skirts)
yeah the way animations are made, the alignment is related to the Hip position
(specifically, the exact distance between the ground and the hips)
so a lot of body sliders are fine since they dont effect that alignment,
but if you change character height, or things like leg length etc, most H positions will break
(because the hip bone is no longer in a position where the animation bone rotation math will work out to the same position originally intended)
this is just a problem with all game animations in all games,
in fact this is a problem that all game devs have spent years toiling over trying to find solutions to
the whole industry of Inverse Kinematics is derived from pretty much this exact problem
so yeah unfortunately there is not likely to ever be a solution to this
you can change the length of structure above the hip bones with fewer problems (usual issues you will run in to in those cases is faces not lining up for kisses, and hands not lining up for hand holding positions, and blow job alignments)