Hi!
When i am using VCA fader for pair or more tracks it crushes system. It happens when i try to click “solo” on VCA fader track. So i have to reset 
No problems with 6, 6.5, 7, 7.5 pro versions when using channel link
System:
Imac 2013 i5
OS Mountain Lion
Cubase 8 pro
Focusrite 24 pro dsp