Quick Notes app causes high CPU usage, lag and battery drain

Hi! I use Quick Notes all the time. Initially, it was a little bit laggy, but I did not pay attention to it, but recently it was constantly barely working for a month to come. And I started to research what might be the issue.


When I opened system monitoring app I was shocked to see that my Notes up can sometimes jump even higher than 100% of CPU usage on my M1 Pro. This is how I realized why it has such bad performance.


For context, I only have handful of notes, where each of it is just a text without fancy styling, images, emoji, etc. Which bothers me even more: why such lightweight notes are causing so much trouble? After completely closing and opening Notes app it work fine for some time, but as I type more, and work more with text the performance start to decline really quickly. Restarting MacBook doesn't help.


I tried to search for this solution. One suggestion told me to use titles for each note. Which is by default bizarre and sometimes uncomfortable behavior. But it did not help me anyway.

Does anyone know what is going on? I looked through other forums and apple community posts. On the one hand, I'm glad to know that this is somewhat common issue, but on the other hand, I wasn't able to find something that can help me to fix my specific case. Would love to hear other's opinion and maybe their stories how they fixed it for themselves. Thanks in advance!


P.S. Here's my CPU usage at 108% as the example...

MacBook Pro 16″, macOS 15.3

Posted on Apr 17, 2025 12:57 AM

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Apr 19, 2025 1:20 PM in response to Owl-53

I finally figured out how to fix it! Here's what I did:


  1. Back up all text/notes from Quick Notes into some document
  2. Delete current Quick Notes
  3. Delete it from the trashcan
  4. Create new Quick Notes
  5. Give it a title (important!)
  6. Copy all the notes that you backed at the beginning (preferably without formatting)
  7. Now everything work well again!


Only after those steps of was able to fix everything. Other methods did not work for me. Hope it will help someone as well. Cheers!

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Apr 17, 2025 2:43 AM in response to Maxzar

Maxzar wrote:

Hi! I use Quick Notes all the time. Initially, it was a little bit laggy, but I did not pay attention to it, but recently it was constantly barely working for a month to come. And I started to research what might be the issue.

When I opened system monitoring app I was shocked to see that my Notes up can sometimes jump even higher than 100% of CPU usage on my M1 Pro. This is how I realized why it has such bad performance.

For context, I only have handful of notes, where each of it is just a text without fancy styling, images, emoji, etc. Which bothers me even more: why such lightweight notes are causing so much trouble? After completely closing and opening Notes app it work fine for some time, but as I type more, and work more with text the performance start to decline really quickly. Restarting MacBook doesn't help.

I tried to search for this solution. One suggestion told me to use titles for each note. Which is by default bizarre and sometimes uncomfortable behavior. But it did not help me anyway.
Does anyone know what is going on? I looked through other forums and apple community posts. On the one hand, I'm glad to know that this is somewhat common issue, but on the other hand, I wasn't able to find something that can help me to fix my specific case. Would love to hear other's opinion and maybe their stories how they fixed it for themselves. Thanks in advance!

P.S. Here's my CPU usage at 108% as the example...

https://discussions.apple.com/content/attachment/f2c6266e-0a5f-4dfb-8a83-cacf04983d6e

Running Sequoia 15.4.1 with Notes open and running


Have a total of about 40 notes


Most are text based and a few have some image files


Notes is using 57.1 MB and the Widget 15.7 MB


All my notes are designated to use only iCloud to sync across to my 2 other computers and iPhone


The excessive Memory Usages you mention


Your Notes application can use iCloud only and / or additional External Sources


To investigate this External Source idea, please read from this link from Apple on this topic


Add or remove accounts in Notes on Mac




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Quick Notes app causes high CPU usage, lag and battery drain

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