I'm not yet at a point where I encounter the issue and would be frustrated by having to wait for those updates, but does such a thing as a user-specified option to "freeze" selected geometry available? Given that topology is rebuilt from scratch at re-compute, I could easily imagine that any selection to freeze an item/object would dictate that all "predecessors" or "parents" would be automatically frozen also, by implication, but any other geometry/objects would be recomputed as dictated by circumstances.
Any thoughts on that?