Digitakt Audio Aggregate Device

Hello, fellow Elektronauts!
I’m using an audio aggregate device to give multiple outs to my computer for the purpose of sending Ableton tracks to outboard gear.

The interface I typically use is a PV-14 USB mixer, 2in/2out.

When creating an aggregate, combining the PV-14 and the Digitakt (creating a 4in/4out) causes a huge system load, and Ableton will not start playback.

I got it working without the Digitakt, creating an aggregate device between my built-in soundcard and the PV-14 (2in/4out.) This means that I can route my headphone jack out to the outboard gear and back in through the PV-14 ins.

Is there currently a way to do this with the Digitakt given the beta state of the audio drivers?

Much thanks in advance! Always excited to see what this community comes up with.