Hello there…I opened a similar topic a couple of days,maybe you can find some help from it.
I fixed it and it works great on Mac.
I set it up like this:
Digitakt outputs to focursite 6i6 inputs
6i6 outputs to speakers.
In Live setting I choose Inputs DT(make sure all the inputs are enabled)
And outputs I choose 6i6.
Then make a midi track and open the OB vst in that,next you make 8 audio channels and select audio from: Digitatk
Now you should be able to see all the DT tracks which you can assign one by one to the tracks you made earlier.
It should work with no noises.
Hope it helped,
Cheers!