Step 1: download the installer for Vivaldi3D Virtual Speakers (VAD) found here: https://vivaldi3d.com/pages/downloads
Step 2: Run the installer as shown in the video below.
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Uninstallation Instructions
Navigate to
C:\Program Files (x86)\Vivaldi3D\Vividizer Virtual Audio DriverThen, double click to run the uninstaller named “uninstaller.exe”