Hi everyone,

No matter what I try (changing buffer size, sampling rate etc.), when I use my Fireface UCX, the entire audio starts to increasingly crackle after about 3 minutes of activity, ending up in total noise which makes the interface unusable. Happens every time, although I suspect the crackling comes more quickly the busier my arrangement is (still happens in very light arrangements too though).

I've updated drivers, no change.

I use:
MB Pro late 2016
OSX Sierra 10.12
Fireface UCX
Firmware v46
Driver v3.01
Ableton 9.72

Would appreciate some help - at this point, I'm considering to return the Fireface as its obviously quite a disappointment (more so as I bought into RME given the otherwise good talk about driver stability).

Thanks!