How to reduce CPU load in Live
- Live Versions: 8-9
- Operating System: All
Live's CPU load spikes to high values, resulting in dropouts, crackles or glitches of the software.
There can be different reasons for this to happen, and this article will provide a step by step checklist to reduce the CPU load of Live.
- Lower the Sample Rate in Live's Preferences → Audio. Try setting it to a value of 44100 or 48000 Hz, which will reduce CPU load drastically if you have used a higher value before. Ideally, you should pick the correct setting before starting a new project, rather than changing it while working on an existing one.
Live's Audio Preferences tab is where the used Sample Rate can be set.
- Increase the Buffer Size in Live's Preferences → Audio, ideally to a value by the power of 2, like 128, 256, 512 or 1024. Keep in mind that the higher this value is, the higher will audio latency be.
Under the Audio Preferences tab you can set the buffer size to a different value.
- Check the harddrive of your machine if you have sufficient space available. As a rule of thumb, you should always have 10% of your hard drive's capacity available as free space.
- Make sure the Multicore/Multiprocessor support is activated in Live's Preferences → CPU.
Make sure to enable Multi-Core Support from Live's CPU Preferences tab.
- Make use of the Freeze function for tracks containing CPU-heavy devices. To freeze a track, right-click it and choose "Freeze Track".
The Freeze Track option from the context menu.
- You can also resample tracks containing CPU-heavy devices. Please refer to Live's Manual Chapter 14.5. Resampling for further reference.
- Check the Activity Monitor (Mac) by pressing [cmd][space] and typing "activity monitor" into Spotlight, or Task Manager (Win) by right-clicking your task bar to see if other applications might be consuming much CPU and/or RAM on your machine.
Loading OS X Activity Monitor using Spotlight
Accessing Task Manager on PC to monitor system resources
In this article you can learn why Live's CPU Load meter might display different values than Activity Monitor or the Task Manager.
- In Live's Preferences → Audio → "Input Config" and "Output Config" disable inputs and outputs from your audio interface if you are not actively using them.
Limiting the amount of active analog inputs and outputs is another way of reducing CPU load.
- Put CPU-heavy effects into Return tracks so that you can process more than one track with the same effect.
- Use the Warping algorithm Complex and Complex Pro sparingly, and eventually consolidate those clips.
- Reduce the polyphony of your Sampler and/or Synthesizer instruments.
An example of how to monitor and to reduce maximum polyphony when working with third party insturments
Some Live devices come with a Spread parameter (e.g. Utility, Corpus, Operator): please use this sparingly.
Operator's spread mode can be quite CPU intensive.
- Set the Reverb to "Eco" mode.
The Reverb Eco mode can be set using the Quality drop down menu.
- De-activate the Hi-Q switch on audio clips. This setting improves the Sample Rate conversion when transposing audio files, at the cost of higher CPU drain.
The Hi-Q button can be toggled from within the Sample Box.
- De-activate your Wi-Fi.