RGB 4:4:4 w/ Blackmagic Decklink

I’m trying to output RGB 4:4:4 using a Blackmagic Decklink Duo 2 Mini. The card supports RGB 4:4:4 up to 1080p30, and Touch Designer implies that it does but I can’t find much detail about it anywhere.

In my tests, ‘Output Color Format’ parameter remains disabled at all times, no matter what I do. I have tried modifying settings in the Blackmagic Desktop Video software too.

I am using version 2025.31760 on macOS.

Could someone please help?