Voyn1x, we have the same CPU, hence I don't believe the mouse stuttering problem is related to Dual Core. Actually I can remember that I had this problem a long time ago, when I was starting with OSx86. I think it must be due to (driver?) incompatibilities because apparently I didn't experience this problem for months, since my machine is configured fine.

Tell me what I shall do to test whether I really don't have the problem - which tasks shall I run?
I use a lot of resources of my machine and most of the time got it running for several hours.