The problem of high CPU occupancy of WASAPI can be solved by the following methods: 1. Check and close the program that occupies audio resources, view and end unnecessary audio applications through the task manager and resource monitor; 2. Update or roll back the audio driver, go to the official website to download the latest driver or fall back to a stable version; 3. Adjust the audio format and sampling rate, change the default settings to 16-bit/44100Hz to reduce processing load; 4. Disable the audio enhancement function, turn off space sound effects, equalizer, etc. to reduce WASAPI pressure; 5. Restart the Windows audio service and refresh the audio process through the service management tool. In most cases, the above steps can effectively alleviate the problem. If it is invalid, you need to troubleshoot system or hardware problems.

Windows Audio Device Graph Isolation (WASAPI for short) is a process related to system audio processing. If you find that it takes up too much CPU, it may be caused by some audio applications or driver issues. Here are some practical ways to solve this problem.

Check for running audio programs

This process is mainly responsible for processing audio streams. If a player, conference software or game frequently calls audio resources in the background, it may cause a surge in CPU usage. You can open Task Manager to see which programs are using audio devices.

• Open Task Manager > Switch to Performance Tab Page > Click to open Resource Monitor
• In the "Audio" section, you can see which programs are currently accessing the audio device
• Close unnecessary audio related programs to see if there is any improvement

Some browser web pages will continue to play sounds, and they may run in the background even if they do not see a prompt. It is recommended to close the tags one by one to check.

Update or rollback audio drivers

Outdated, corrupted or incompatible audio drivers are common causes of WASAPI high CPU usage. Try updating or rolling back the driver to see if it solves the problem.

1. Press Win X to select Device Manager
2. Expand Sound, Video and Game Controllers
3. Right-click on your audio device (such as Realtek High Definition Audio)
4. Select Update Driver or Rollback Driver

If it is a laptop, it is recommended to go to the official website to download the latest audio driver installation package instead of relying on the system to automatically update.

Adjust audio format or sampling rate

Sometimes the system default audio format is not set properly, which will keep WASAPI in a high load state.

• Right-click the taskbar volume icon > Select Sound Settings
• Click on the device properties under the current output device
• Go to Advanced Section > Try changing the default audio format (such as changing from 24-bit/48000Hz to 16-bit/44100Hz)

This change may affect the sound quality, but if you are only using it on a daily basis, switching to a standard sampling rate will usually not make a significant difference, which will help reduce the CPU burden.

Disable enhanced audio functionality (optional)

Certain audio enhancements, such as space sound, equalizer, Dolby sound, etc., may increase the processing pressure of WASAPI.

• Also enter Sound Settings > Current Audio Device > Device Properties
• Click on the enhancement function under Other device properties
• Try turning off all enhancements

In addition, similar functions may also be available in audio management software such as Realtek, remember to check them together.

If none of the above methods work, you can try restarting the Windows Audio Service:

• Press Win R to enter services.msc
• Find Windows Audio Services
• Right-click to select Restart

This forces the audio-related process to refresh, and sometimes temporarily alleviates the problem.

Basically these methods are all done, and in most cases, they can be done by checking the program and updating the driver. If it still doesn't work, you may need to consider system file corruption or hardware compatibility issues.

The above is the detailed content of How to reduce Windows Audio Device Graph Isolation high CPU usage?. For more information, please follow other related articles on the PHP Chinese website!