Cubase 8.5 - CPU Drop-outs and spikes and more

Hi,

I also have real time peak spikes and audio drop outs big issue.
I have been trying to solve this problem since 4 months.
I already found some bottlenecks indeed, but this is also a Cubase problem.

I hope Steinberg support will take this seriously in consideration:
Please,

  1. Can you explain why the spikes/audio drops completely disappear when I deactivate ‘multiprocessing’ ?
  2. Can you explain why I have no spikes and audio glitches on the same test project in Reaper ?

Regards,

Thomas

Audio card
RME babyface Pro USB
Computer
ASUS X99 Deluxe USB 3.1
i7 5960X
16GB DDR4
SYSTEM Disk SAMSUNG 950 PRO M.2 NVMe
2xCRUCIAL MX200
2xWestern Digital Caviar Black in RAID1
Zotac NVIDIA GT710
3 Displays
WINDOWS 10 Pro 64bit