Would it be possible to have simulations calculate Nth frames(like every 4th frame, a simple interpolated drape would suffice in most cases) then hold position for UN-calculated future frames? With the option to recalculate 'this' frame/ 'these' frames without re-running the entire calculation ? Physics are great but not necessary or over done in a to b- animation, I just want to get from point A to point B employing the straightest/simplest/quickest course possible. Besides that, think about the time saved by calculating only 1/10th of the frames, then making any necessary 'spot' corrections... Carry on...

Y'all have a great day.