I have 2 identical 15 inch Macbook Pros, the latest 2017 version.
I tried to install a clean 10.13.4 on one of them, and then use Merging Hapi and its Ravenna driver with it.
It does not work properly.
I got a few second distortion in every 1, 2 minutes when playing from iTunes and no sound at all from Roon.
The other Macbook Pro is using 10.13.3 and it works without problem. Both Macbooks are exactly the same type, no other app is installed just the standard OS install and Roon.
So I think it is the problem of 1013.4.