How to Fix System Overload in Logic Pro X

There are multiple ways to fix a system overload in Logic Pro X, including quitting other apps, storing large projects to external devices, monitoring system performance, adjusting audio device preferences, and more.  

I’m Donovan, and I’ve been making music for several decades. I write, record, and produce as often as possible and have years of experience working with Logic Pro X. I’ve also dealt with plenty of system overloads and know how to address this issue. 

This post will show you how to fix a system overload in Logic Pro X. There are multiple possible solutions to this, so I’ll provide you with a bunch of different ways to address it. My goal is to help you avoid system overloads, so you don’t interrupt your projects. 

Let’s dig in.

Key Takeaways

  • There are many possible ways to fix a system overload, from simple solutions like quitting other apps to more complex measures such as changing audio device preferences. 
  • The CPU performance meter can give you a real-time look at how close you are to reaching system overload, which can help you prevent it. 
  • Choosing a Mac with higher RAM can help avoid system overloads, as can saving larger projects with many tracks to external hard drives.

Initial Steps

There are a few things you can do before you even open Logic Pro X that can help you avoid system overloads. These are good to know about because they essentially act as preventative maintenance that will help you prevent overload issues before they appear. 

One of the first things to consider is the amount of RAM your Mac has. Higher RAM will boost performance and result in fewer system overloads because the computer can handle more complex tasks. 

If you already have a Mac, you’re stuck with whatever RAM is installed on it, and recent-model Macs can’t be upgraded. But if you are looking at getting a new Mac and plan on working in Logic at a high level, consider getting one with more RAM.

The other thing you should do is quit other apps while you are working with Logic Pro X. The more apps you run, the more likely you are to reach a system overload because your Mac handles multiple tasks at once. 

These two initial steps alone can go a long way toward preventing a system overload, so keep them in mind before you even start working in Logic Pro.    

How to Fix System Overload Logic Pro X 

Now let’s look at some ways we can fix a system overload. Some of the tips and tricks here will help you monitor computer activity, configure your system, or otherwise limit the chances of a system overload. 

Solution 1: Monitor Performance with CPU/HD Window

You can display a CPU/HD window in Logic Pro X that will help you monitor how hard your Mac is working and give you a visual display of how close you might be to system overload. This can help you prevent them from happening. 

To display the CPU/HD window, follow these steps. 

1. Open a new or existing project in Logic Pro X. 

2. Select View from the main menu at the top of the project window. 

3. Select Custom Control Bar and Display. 

4. Select Custom from the drop-down menu. 

5. Make sure the Performance Meter box is checked.

(Screenshot taken in Logic Pro X on my Mac)

6. Select OK.  

A performance meter will now be displayed on the LCD. Double-click this to open up the CPU/HD window in Logic Pro X. As the two bars in the meter rise closer to 100%, you know you are approaching a system overload. Monitor this regularly. 

Solution 2: Save Complex Projects on an External Drive

Another step to prevent system overloads is saving complex projects with many tracks onto an external hard drive or device.

The more tracks your projects have, the more processing power they will take to run. By saving these onto a dedicated storage device, you limit the chances of system overload by taking the burden of retrieving the files from your Mac.

Solution 3: Increase Buffer Size

Increasing the buffer size in Logic Pro can also help avoid system overloads. This reduces the CPU load on your Mac when you are working with Logic, and it’s good to know how to make adjustments. 

To increase the buffer size in Logic Pro X, follow these steps. 

1. Open a new or existing Logic Pro X project. 

2. Select Logic Pro from the main menu at the top of the screen. 

3. Select Preferences

4. Select Audio

5. Select the Devices tab. 

6. Adjust the buffer size up to a maximum of 256 samples. 

7. Select Apply. 

(Screenshot taken in Logic Pro X on my Mac)

You can also make some other adjustments in this device preferences window that can help. Change the Process Buffer Range to large. And also turn the ReWire Behavior off if you aren’t using that feature. 

Solution 4: Adjust Automation Settings

If you don’t plan on using automation in your project, you can reduce the chance of system overload by making some adjustments to the automation settings. 

To do this, follow the steps in the section above to pull up the Preferences menu. 

1. Select Audio.

2. Select General

3. You’ll see the Sample Accurate Automation menu. Select Off. 

Logic Pro X Lagging

Lagging, also known as latency, is a different issue than a system overload, but they can often be related. Logic Pro X can lag when your system runs too many processes at once and can’t quite keep up. 

Like a system overload, there are several fixes for latency. Sometimes a quick restart of the Logic app and/or your Mac will do the trick. Just be sure to save your project first, so you don’t lose any progress. 

Latency can also be caused by not having enough RAM to run a complex Logic project. If you are working on a project with a high number of tracks and are experiencing latency, try saving the project to an external dedicated storage device.

Some of the adjustments mentioned in the sections above can also lead to latency. Increasing the buffer size and range can also cause latency, but this can also help avoid a system overload issue, so it’s a double-edged sword. 

The more complex a project you are working with, the more likely you will experience lag. Using a more powerful Mac will definitely help here, but if you are stuck with what you have, you might just need to deal with a bit of latency as well.


Here are a few quick answers to some of the most frequently asked questions relating to how to fix a system overload in Logic Pro X. 

What causes system overload in Logic Pro X? 

Multiple things cause a system overload in Logic Pro X, but running low on CPU is one of them. If you use the CPU monitor in Logic, you can keep an eye on this, and if you get a Mac with higher RAM, that will also help. 

How do I free up CPU in Logic Pro X? 

You can free up CPU in Logic Pro X in a few ways. You can adjust the buffer settings to a higher sample rate. You can also use send effects to reduce the CPU load when you have a lot of plugins installed on a single channel. 

Final Thoughts

Nobody likes dealing with the dreaded system overload in Logic Pro X, but we all see it at some point. Following all the tips and tricks mentioned above will reduce your chances of system overload so you can stay deep into your audio projects. 

Even if you take preventative measures and use a Mac with high RAM, there is still a possibility of a system overload when using an intensive app like Logic Pro X. You can limit your chances of this, but you can’t entirely avoid it altogether. 

Do you have any tips for avoiding system overload that I didn’t mention here? Let me know in the comments below.

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