9 Hidden MacBook Settings That Improve Speed Instantly

2. Optimize Energy Saver Settings for Performance

The Energy Saver preferences in macOS contain several hidden performance throttling mechanisms designed to extend battery life but often unnecessarily limit your MacBook's capabilities even when plugged into power. By accessing System Preferences > Energy Saver (or Battery on newer macOS versions), you can disable "Put hard disks to sleep when possible," which prevents the system from spinning down storage devices and causing delays when accessing files after periods of inactivity. More importantly, adjusting the "Computer sleep" and "Display sleep" settings to "Never" when plugged in ensures that your MacBook maintains peak performance states rather than constantly cycling between power-saving modes that require time to exit. The "Prevent computer from sleeping automatically when the display is off" option is particularly crucial for users who run background tasks, as it ensures that intensive operations continue at full speed even when the screen is dark. For MacBooks with discrete graphics cards, the "Automatic graphics switching" feature can significantly impact performance by forcing the system to use integrated graphics for tasks that would benefit from dedicated GPU acceleration. Disabling this feature ensures that demanding applications always have access to the full graphics processing power, eliminating the performance penalties associated with dynamic GPU switching and the brief interruptions that occur during transitions between graphics processors.