Cubase does not use 2d CPU of Mac Pro 2012


I have a problem. Cubase 8.5 uses only one CPU of 2 of my Mac Pro 2012.
The same picture is for VE Pro 5. But Geekbench 3 test loads 2 CPUs.
How to force Cubase to use both CPUs?

Thanks for an advance.

I’m learning these days about how CUBASE is highly inefficent in using more cores of your cpu