The old Mac computer's performance can't keep up with the current system and software, so that it will feel more and more stuck. MacPilot, a MAC system optimization software, can improve the system performance by closing some unused functions of the system.
MacPilot shows you every opinion the system can set, which can optimize your internet connection, customize Apple shared folder, disable menu items, and disable icon caching. Besides, you can also set historical restrictions, clear recent files, prevent your dock from being modified, turn off all system animations, set default name and location, disable auxiliary processors, and even change the login screen.
If you feel that the MAC is too slow, you can try MacPilot. Besides, it works better with CleanMyMac