i want to give you my experience with a MacBook Pro (mid 14) and USB driven AUDIO/Midi devices, e.g. ELEKTRON and VIRUS.
For years my troubling device was my Virus TI2 with the Virus Control Plugin, the TI is a great sounding machine, but act like a diva with the VC Plugin (and SPDIF ) I spend days of testing configurations with USB HUBs (spa. USB 2.0 MTT's) ... always trouble...
Now i gone to EL Capitan and suddenly the Virus Control Diva is very calm. and running... but OVERBRIDGE is now the Diva ...
spez. with OVERHUB and !BOTH AK AND AR!
e.g. mostly only one ist streaming at the same time with overbridge.
After reading this topic, i changed my setup:
My USB Driven Devices, spez. the Virus TI now running well with OVERDUB, connected to an USB 3.0 Port, using all ports !
The AK and AR running over the USB 2.0 MTT Hub connected to the USB 2.0 port of the my Thunderbolt Display... normal USB 2.0 ... this was the Hub for my TI ! ... and all works.
Maybe Elektron should ask the guys from ACCESS, how they solved the AUDIO/MIDI-USB Connection.
Nice Detail: the support from access said over years, access will not change their integration till APPLE handle their BUG inside their USB integration!
I suppose, they did
excuse my bad english, i am native german.
and i learned a new word:
love 2 all