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?