Its defenetly your GPU, I was able to run the game at full speed with no framedrop during gameplay with my system. CPU usage in the title bar was always high simetimes at 95-99% so even my GPU couldnt keep up at times.
Edit: Fixed a typo
Edit: Fixed a typo
Specs:
CPU: C2D E8400 @ 3.6
GPU: GTX 560Ti 2Gb
MOB: Asus P5QL
RAM: Crucial 4Gb
OS: Windows 7 64bit/XP 32bit
CPU: C2D E8400 @ 3.6
GPU: GTX 560Ti 2Gb
MOB: Asus P5QL
RAM: Crucial 4Gb
OS: Windows 7 64bit/XP 32bit