Kore 2 and cubase, audio glitches/cpu spikes

[ts-12]

when i have kore player loaded as vst in cubase i get short audio drop outs now and than. (i don't know if its actually an audio drop out, because the audio doesn't stop after this glitch but then keeps running). It also makes cpu meter spike to 100%.
With every sound in KORE, I tried a blank project just with KORE and it still happens. After I Restart Cubase and try any other VSTi, works OK, but as soon as i load KORE and even use another vsti the audio begins to glitch.
Basically KORE affects the whole Cubase, not just itself.
Hyperthreading is Disabled in BIOS as well as other CPU 'enhancements',
Active CPU cores are set to "ALL", maybe that is causing the problem?
I tried both audio priority 'Normal' and 'Boost' in cubase's VST Audio System Audio Priority.
Priroty doesn't jump from 'High' to "Normal" in Windows Task Manager like others experienced.
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-Win7 pro / i7-920 / 6 GB DDR3 RAM / HD: 75GB, 75GB, 500GB/ ASUS P6t

-Cubase
-Focusrite Saffire Pro 40

-Roland Fantom-G6, YAMAHA Motif-ES6, KORG Trinity-Rack
+ more...

[polyal]

Run kore with no sounds...then add them one by one...checking each time??