Cubase 8.0.10 - spikes are still here

My problem is…
I’m starting cubase, loading project, start playing… everything goes ok.
Then when I want to change Focusrite Mixer settings and putting Cubase in background spikes starting to occur…
It was before the update and it’s still here after… please help me bucause I’m getting frustrated… spent already lots of hours trying to figure out what’s causing the problem… could it be the stability between Focusrite drivers and Cubase?

I have also noticed that even when I do not play the project but I will put Cubase in background the spikes occur, less and from time to time…