Hmm... I have been trying to find a solution for months, too.
It turns out AMD put the toggler in a super stupid hidden place.
It's under "Streaming". You can toggle it off there or press "ctrl+shift+c". See the green box. Yes, only this NV green can express my anger.![Annotation 2020-07-09 231638.png Annotation 2020-07-09 231638.png](/t5/image/serverpage/image-id/24036i109384AF74FB81F2/image-size/large?v=v2&px=999)