You should also note that with some audio hardware, manufacturers may actually replace the “Windows Audio Device Graph Isolation” with their own digital signal processing service. For whatever reason, audio hardware manufacturers very often don’t give you that option themselves. This type of isolation also ensures that Windows always provides you a way to turn off audio enhancements in the OS, regardless of what type of hardware you’re using. By isolating the digital signal processing–the part more likely to experience a crash–to a separate service, crashes are more contained. Windows Audio is so deeply hooked into Windows that a crash is often likely to take down the whole system rather than just your sound. This, in turn, leads to better stability. Isolating the services like this allows developers of hardware audio products include their own audio enhancement service without having to replace the Windows Audio service itself. “Windows Audio Device Graph Isolation” is separated from the standard Windows Audio service. It handles digital signal processing, including the advanced audio enhancement effects provided by Windows.
The process serves as the primary audio engine in Windows 10. Sporting an awesome-sounding name that doesn’t really tell you anything, “Windows Audio Device Graph Isolation” is an official part of Windows. What Is the “Windows Audio Device Graph Isolation” Process?