Cubase Crackling with Low CPU Load!

Hi everyone.

I have Cubase 8.5, Mac Pro 2013, 64 gigs of RAM, 6 core processor, duet apogee interface, samples on 2 SSDs and and 7200 RPM drive.

My CPU load is low, but Cubase is crackling like crazy! When I start up Cubase and it starts crackling, then everything on my computer starts crackling too! Like Youtube, Itunes, Audacity, etc. What is Cubase doing to my computer!?


Have you tried increasing your buffer size if possible in your OS ?


did you update the firmware and driver for the interface?