Hi @WBENSTOCK There is a difference between clearing cache partition which I would say is advisable after updates and in event of some problems (clearing system cache) which @GalaxyA51user has described and the App cache, though there are apps which can clear all the app caches at once. see some options here,though of these have only ever used Files by Google. https://www.guru99.com/best-android-cleaner-apps.html I find the Galaxy Booster, one of the options in Galaxy Labs effective in speeding up system. https://itnext.io/magic-trick-of-galaxy-app-booster-684e1984576e
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My Device- S21 Ultra 5G ( SM-998B/DS ) CSC= BTU , 12GB/256GB
One Ui 4.0,Android 12 Official Version.