How to Change Audio Buffer Size in Windows 10

Audio buffer size is an important setting that affects latency and performance in digital audio workstations (DAWs), gaming, and media playback. A smaller buffer size reduces latency but requires more CPU power, while a larger buffer improves stability but increases latency.

This guide will show you how to change the audio buffer size in Windows 10, whether you’re using an external audio interface or the built-in sound card.

Method 1: Change Buffer Size in ASIO Audio Interface Settings

If you’re using an external audio interface, the buffer size must be adjusted in its control panel.

Steps:

1. Open the ASIO Driver Panel
   • Find your audio interface’s software (e.g., Focusrite Control, ASIO4ALL, or Steinberg UR Control).
   • If you use ASIO4ALL, open it from the System Tray (bottom-right of the taskbar).
2. Locate the Buffer Size Setting
   • Look for a setting labeled “Buffer Size” or “Latency”.
   • Some interfaces may list it as “Samples” (e.g., 64, 128, 256, 512).
3. Adjust the Buffer Size
   • Lower values (64–256 samples): Reduce latency for real-time monitoring (ideal for recording).
   • Higher values (512–1024 samples): Increase stability for playback and mixing.
4. Apply Changes and Restart Software
   • Click Apply or OK, then restart your DAW or media software.

Method 2: Adjust Buffer Size in DAW Software

Some DAWs (Digital Audio Workstations) allow direct buffer size adjustments.

Steps (Example: FL Studio, Ableton, Cubase, Reaper)

1. Open your DAW.
2. Go to Audio Settings or Preferences.
3. Look for the Buffer Size or Latency setting.
4. Adjust the value based on your needs.
5. Restart the DAW for changes to take effect.

Method 3: Change Buffer Size for Windows Audio (WASAPI/DirectSound)

If you’re using the built-in Realtek or Windows Audio, buffer settings may be adjusted via system settings.

Steps:

1. Right-click the Speaker icon in the taskbar → Select Sounds.
2. Go to the Playback tab → Select your default audio device → Click Properties.
3. In the Advanced tab, look for Default Format settings.
4. Try different sample rates (e.g., 44.1kHz, 48kHz) to see if performance improves.
5. Click Apply and restart any running audio apps.

Troubleshooting Common Issues

Audio Dropouts / Crackling?

• Increase buffer size to reduce CPU load.
• Close background apps consuming system resources.

Latency Too High?

• Lower the buffer size for faster response.
• Use an ASIO driver instead of WASAPI/DirectSound.

Changes Not Applying?

• Restart your DAW or audio interface after making changes.
• Update your audio drivers from the manufacturer’s website.

Conclusion

Changing the audio buffer size in Windows 10 can help you achieve lower latency for recording or better stability for playback. Whether you’re using an ASIO interface, DAW, or built-in Windows Audio, adjusting these settings ensures optimal audio performance.