Step 1: download the installer for the Windows x64 Vividizer Plug-In found here: Downloads https://vivaldi3d.com/pages/downloads
Step 2: Run the installer as shown in the video below.
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The file path to the vst: C:\Program Files\Common Files\VST3\Vivaldi3d\Vividizer.vst3
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Uninstallation Instructions
Navigate to
C:\Program Files\Common Files\VST3\Vivaldi3d\unins000.exe
Run the uninstaller by double clicking the uninstaller executable and following the prompts