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PiotrJJ
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HP Recommended

Windows Audio Device Graph Isolation CPU usage after Realtec High Definition Audio driver update

Spectre x360 13-t ae-000
Microsoft Windows 10 (64-bit)

Yesterday, HP Support Assistant suggested an update for Realtec High Definition Audio(SST) driver. After the driver update to version 6.0.1.8437, I noticed laptop's cooling fan/fans were working pretty much at all times.

 

Windows Task Manager is showing Windows Audio Device Graph Isolation process continuously using 20-30% of CPU resource. Processor stays hot, fans stay on. Not good at all!

 

I googled the issue, and it turned out it was nothing new. I went through all the recommended solutions, and applied those that I was able to. Among other things:

 

  • uninstalled the driver (also via Windows' Device Manager), and installed it again - three times, including a fresh download from HP's website;
  • uninstalled Skype desktop verion and Spotify for Windows 10 app;
  • run Windows Troubleshooter;
  • run Microsoft Malware Detection software.

 

Nothing seems to help. The only time I saw Windows Audio Device Graph Isolation process not hogging CPU was when I uninstalled Realtec High Definition Audio(SST) driver, leaving the laptop with no sound device whatsoever. The issue comes back every time the audio driver is reinstalled.

 

MY CONCLUSION: the most recent version of Realtec High Definition Audio(SST) driver is the culprit.

 

Unless, someone has a better idea?

 

Also, when HP Support Assistant installs new drivers/software it recommended, it creates a 'restore point'.
QUESTION: How do I roll back to previous version of audio driver? using HP Support Assistant? Or, using Windows restore?

 

 

 

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