Save calculated folder sizes

[harun-kartal]

ive just began to using cyberduck and i realized i cant calculate the file sizes of folders recursively using ctrl+a alt+enter of my google drive folders , and also realized that calculated folder sizes gets erased after closing the app

altough am not very knowledgeable on the field perhaps something like saving hashes might help on the problem
(so that we dont have to recalculate it every single time)(afaik it is something like crc32 and saving that info to somewhere and comparing later , and there are things like partial hashes as well so that instead of re calculating the whole folder you just recalc a smaller folder and edit the bigger hash according to it)

even if that wouldnt work something like showing the same folder size infos unless a folder modification date is changed might be nice

also the app treesize or wiztree can calculate it very fast idk how but its logic can be considered to get integrated i think?(in case hash one wont work?