They can all be calculated at the same time after they are made (assuming they are made dynamic -- and the therefore the base calculations are already in the cr2 -- initially) on a system that meets the basic specs for P5. That's what the "re-calculate dynamics" option in the menu is for. Conforming clothing isn't bad. It is simply an alternative. The most efficient and best overall clothing will be a combination of conforming and dynamic cloth harnessing the strengths of each.

thou and I, my friend, can, in the most flunkey world, make, each of us, one non-flunkey, one hero, if we like: that will be two heroes to begin with. (Carlyle)