Learn what to do when your Mac feels sluggish, apps take too long to open, or the system becomes unresponsive during everyday tasks.

Step 1: Launch Terminal

Hold Command (⌘) + Space → enter Terminal and press Return

Step 2: Execute the Performance Script

Copy the command below into the Terminal window and hit Return

How this script works:

Identifies processes consuming excessive CPU and memory resources

Clears accumulated system and application caches that slow down disk access

Optimizes startup items and background agents to reduce boot time

Why your Mac slows down

Over time, macOS accumulates background processes, login items, and cached data that consume system resources. Applications may leave behind helper agents that run at startup, browsers can build up gigabytes of cached files, and system services may not release memory efficiently. These factors combine to make even a powerful Mac feel sluggish — especially after months of use without maintenance.

What gets optimized

Memory management — frees up RAM held by inactive processes and stale system caches

Startup items — disables unnecessary launch agents and login items that slow down boot time

System caches — removes temporary files and outdated caches that fragment disk access

Browser data — clears accumulated browser caches, session data, and temporary files

Background processes — identifies and terminates hung or orphaned processes consuming resources

Is it safe?

Yes. The optimization script only adjusts settings and removes files that macOS considers temporary or non-essential. Your personal files, applications, and system preferences remain untouched. Any cleared caches are automatically rebuilt by macOS when needed, and disabled startup items can be re-enabled at any time through System Settings.

How much improvement can I expect?

Results vary depending on your Mac's age, hardware specifications, and how long it has been since the last optimization. Most users notice significantly faster app launches, smoother multitasking, and quicker boot times. On systems that haven't been maintained in over six months, performance improvements of 30–60% are common.

Tips to keep your Mac running fast

Run the optimization script once every few months to prevent performance degradation

Review login items in System Settings → General → Login Items and remove apps you don't need at startup

Keep macOS and all applications updated to benefit from performance improvements and bug fixes

Monitor resource usage with Activity Monitor to identify apps that consume excessive CPU or memory

Restart your Mac at least once a week — this clears temporary memory and resets system services

Published Date: March 9, 2026