Checkbox to disable shaft physics
Though they may be implemented in the future, oral, titjob and handjob action is currently limited to what we can do with timelines. However, when moving a body part near the shaft of an uncoupled character, the shaft is pushed away due to the physics in place. A workaround to this is to create an invisible character and couple it to the receiver of the blowjob/titjob/handjob, as that will disable outside influence on the shaft, but is cumbersome and inefficient regarding computation.
I propose a checkbox for uncoupled characters with shafts that disables their shaft physics, so the implementation of such scenes becomes easier.
Actually it would be useful to be able to disable physics by part in general; for example if doing a scene where the tail is free to swing, one could have physics enabled, but if doing a scene where the character is lying on the bed one could disable the physics to rotate the tail to lie on the bed instead of clipping down into it or flying all over the place if it gets molested.