HOGPC 3.1.3 b2700 with win7 CPU speed issue?

I have installed windows 7 home prem. on PC
with intel D510 1,66 2GB and HOG3PC b2700
1 Elo 19" touch- nothing else
+ DP8000+ Expander
have patched 1440 rgb leds/ 90 each universe

all win setting set for optimum performance, no output window

selecting all fixtures at full and pressing effect 27
takes approx 15 s until anything happens
if meanwhile any button touched - Windows alert box "HOGPC not responding"
and/or networkerror...alert box

after that its start outputting DMX

strange enough , couldnt see any delays when changing things in effect engine only in effects library
fully reproducable
I would rather believe in software issue, but
any suggestions are highly appreciated -
because this should be installed next week in a club
Thanks Rob
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