Cubase 10 and 9.5 PRO CPU behavior

Cubase 10 performance cpu is 100 (multi prosessing activated) but task manager says 19% total cpu usage.

How ti fix that?

Steinberg support do not answer nothing, just silence. Not even “we chek it or”. But nothing!!!

Xeon E5-2680 v2 (10 core 20 thread)
32G ECC RAM
SSD

You might like to read this post:

https://www.steinberg.net/forums/viewtopic.php?f=283&t=141259