Master volume control not working in Windows 11

[Shuval de Villiers]

I have a soundbar connected to my Windows 11 PC via optical cable (with USB to optical adapter). The master volume control does not have any affect for this audio output, it is always at 100% volume. If I go to 0% it does mute it as expected. Changing the volume per application works correctly, only the master volume does not work. Other audio output types work correctly (3.5mm audio jack, USB DAC/AMP, HDMI out from GPU).I am using "Realtek High Definition Audio" driver but the issue persists even if I completely uninstall the driver and only use Windows built-in "High Definition Audio Device"

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