Why is my MacBook slow and how to fix it
Open Activity Monitor and find the app that loads the CPU or memory. If everything looks calm, check whether your disk is almost full.
Find what's slowing your Mac down
- Press ⌘Space, type “Activity Monitor” and open it.
- On the CPU tab, click the “% CPU” column — the apps loading the processor the most move to the top.
- On the Memory tab, look at the Memory Pressure graph at the bottom: red means you're running out of RAM.
- Select an app you don't need, click the Stop button (the cross at the top) → Quit.
Don't quit processes whose names mean nothing to you: many of them are part of macOS.
Check your free disk space
When the disk is almost full, macOS has nowhere to keep temporary files and the Mac starts to lag. To check: Apple menu → System Settings → General → Storage.
If space is low — how to clean up your Mac. In WIWIClean, caches and forgotten apps are removed with a few clicks.
Remove extra login items
- Apple menu → System Settings → General → Login Items & Extensions.
- Under Open at Login, select an app you don't need at startup and click “–”. The app itself isn't deleted.
FAQ
Why did my MacBook get slow after an update?
For the first hours after a macOS update, Spotlight re-indexes your files in the background. Give it time — the Mac usually speeds up on its own.
What if my MacBook is slow and hot?
Find the app with a high “% CPU” in Activity Monitor and quit it. If it heats up without load, make sure nothing blocks the vents.
Do RAM cleaner apps help?
No, macOS manages memory itself. Quit the apps you don't need or restart your Mac instead.
Will cleaning the disk speed up my Mac?
Yes, if the disk is almost full. If you have plenty of free space, cleaning won't make it faster.