"How can I make my mac faster?"に関する回答The more cache files the APP or OS have to search, the slower the app becomes as it has to wait for the search to finish. By cleaning out old outdated cache files, the search time is much shorter. So many websites today are constantly changing their pages making caching almost pointless over a long term (say a week or more). That's why keeping the caches cleaned out will net a speed increase. A once a week routine should keep everything sparkling fast.