i've been getting help from someone who has worked with erogenesis on Lali's Bits, and it's been pretty great, lots of learnings. there are two hidden morphs put into the figure called ChestTwist+ and ChestTwist-. these were likely intentionally added to keep the body moving more realistically. i found out how to fix the particular issue i noticed, which was that when i used say, ironman13's Gold Poses GPC-Kneel-01, my character's one hand would go through the floor and the other would raise up. when i tried to use Twist on the chest to change that (given the rest of her body was where i wanted it to be already), it wouldn't go more than six degrees in either direction. my helper told me to edit the parameter settings from a min and max of -6 and +6 respectively. and then it worked i was able to twist her to naturally match the intention of the pose.
i also got this information initially, as part of a fix for the bits if the "Perfect V4" morphs get in the way. apparently they do, so hope this helps:
For lower body issues try this, set the Perfect V4 LowerFix_PerfectThighs, LowerFix_PerfectLegsR, and LowerFix_PerfectLegsL morphs under Body > Morph to 1.
Then set the Remove Leg Morphs for Lali Bits under Body > Erogenesis > Morphs > Master Control to 1.
The legs are controlled by the Perfect morphs while the vagina and hips / butt are controlled by Lali Bits.
For the upper body issues, set the Perfect V4 LowerFix_PerfectTorso, LowerFix_PerfectNeck, LowerFix_PerfectShoulderL and R, and LowerFix_PerfectArmsL and R morphs under Body > Morph to 1.
Then set the Remove Arm Morphs for Lali Bits under Body > Erogenesis > Morphs > Master Control to 1. Its the same as above but controls the upper body.
the latter didn't help me with this particular issue, this particular pose. but i wanted to share it in case it highlights problems others are having.