In reply to myself: just discovered the dialog slider actually does work, but you have to lower it all the way to achieve the slightest hint of a volume decrease. Still, it’s bearable now.
I know this is an old post but I have the exact same issue and can’t find a fix. Those dialogues are so incredibly loud I have to hurriedly remove my headphones before they start yapping or my eardrums explode. The volume sliders don’t appear to do anything. Any solution?
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