Not really, but I think it's better to have a some slow code that only happens when the user does something (moves the slider or opens the tweakables for the first time) than to attempt to cache a temporary - especially since Archive is itself something of a cache of the filesystem and so needs to update when that changes anyway. Note that this Archive is in the Editor, the Archive for the ship part is not created at that time. If the Archive was created for parts on the Editor (eg. if editing code was allowed there), that would be the Archive to use.