DX9.0c not supported on Windown 10?

Does anyone know if it’s possible to have Forza Horizon 3 show up in the Volume Mixer within Windows? I usually like to balance audio output from programs but unfortunately every time I want to change the volume I have to dig through the settings and flip back and forth between the game and what I’m listening to in order to have it work the way I want…

[IMG alt=“1b4346f1ff3a58b8b8c0aca2f52a3a45.png”]https://i.gyazo.com/1b4346f1ff3a58b8b8c0aca2f52a3a45.png