running slow

Hey there, Brian,

Thanks for posting in the Apple Support Communities. I understand that you have some concerns over the performance of your Mac since installing the new macOS Catalina. It seems to be running slower than expected. I'm happy to help!

There are a variety of reasons you may be experiencing slower performance since updating. First, when you update your macOS software, it often introduces new features and settings. This is especially true if you make an update from one macOS family to another, like moving from Mojave to Catalina. While your computer is adjusting to these changes, it will use resources in the background, which can temporarily impact how the tasks you ask it to perform run.

This shouldn't last long, though, and if you notice your computer is still behaving slower than expected after a few days, there are troubleshooting steps you can take. Try the following:

1. Check out the information and tips in See how apps affect Mac performance, battery runtime, temperature, and fan activity - Apple Support.
2. Quit open apps: Quit apps on Mac - Apple Support then restart your Mac: How to turn your Mac on or off - Apple Support
3. Boot into safe mode: Use safe mode to isolate issues with your Mac - Apple Support.
4. See if the issue persists in a test user: How to test an issue in another user account on your Mac - Apple Support.

Have a great day!

Thanks for following up, Brian!

We're glad to hear everything is working as expected now. It was our pleasure helping!

Cheers!