Easy as it could be: full 60 FPS - without vSync even up to 700 (?!) - but extreme lags if 3 or more enemies appear. Funnily the FPS don't even drop that much, maybe 40-50 FPS, but still the game feels like maybe 5 or so.

CPU: Intel i5 (Quad)

vSync on / off - no change.
all four cores / only one core - no change either.


Help, pls? Afaik this didn't happen on either retail nor Steam version (yes, I bought the game as often as I could^^)

I don't know why - but it worked.

Re-installed: Worked great.
vSync on - greatly increased loading times, but game runs fine, still.
PowerMAD installed - still no problem. That's it.

Thank you!