Sunflower Audio on Mac

Has anyone out there with a Mac mini been able to figure out how to use the built in Soundflower 2 ch audio output with Roon?

Sunflower shows as an output option in my core and can upsample to 192k. I try to set it up but get no audio via usb. When I use the speaker out on the Mac, the audio works but I’m limited to 48k max. Any input would be helpful. Thanks!