As for the precise details I would check with Technical Support, here: http://www.ikmultimedia.com/contact-support/mi/ for some one to one help (US (East Coast) Business hours, generally).
---------------- DarkStar ... interesting, if true. Inspired by ...
Found it under the "Spec's. The info is there and so this was on me. I just missed it. Ahhh it's ok I'm running an old 2009 iMac, its time to upgrade anyway.
Mac® (64-bits) Minimal: Intel® Core™ i5 with support for AVX instructions, 8GB of RAM (16 GB suggested), 20GB of available hard-disk space, macOS 10.9 or later. USB port (3.0 suggested). Supported Plug-in formats (64-bit): Audio Units, VST 2, VST 3, AAX.