Audio stuttering/distortion with USB DAC under High Sierra with OpenCore.

I have a FX Audio DAC-X6 attached via USB. The OS detects it (it shows up by its proper name in the audio output device list) and it plays sound, but the sound is horribly clipped and distorted. When watching a video, it's nearly silent, but with occasional clicking and stuttering.

The DAC is a USB 2 device hooked up to a USB 3.0 hub, which is connected to a USB 3.0 port. It works fine on Windows and it worked fine before I reinstalled the Mac OS. Unfortunately, the last installation was years ago and I don't remember everything I did.

I'm running Mac OS 10.13.6. The motherboard is an Asus Z270-K with an ALC887. I'm using OpenCore, and I have the AppleALC kext installed.

Any suggestions on what I should try or where I should look next?

submitted by /u/BassoonHero
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