First of all: I love you.
This was the best solo match I've had since retail. The FPS was up, the RAM use was down (300 of about usual 500), and it was very nice and very smooth.
Looks like that tag and OpenGL do the trick.
I didn't crash, I was tempting the system as well (it did _start_ to do the thing that freezes me, but it just simply let go, and didn't freeze me this time - it acted the way it always has during retail).
The match I had with myself was exactly as it was when I was playing in retail.
Hopefuly there will be no more problems of this kind.
Thanks. A. Lot.