Enemy Engaged 2 on 9300GS

Settings
800x600 MAX 2xAA 16xAF

With Fraps 20-25FPS
Without Fraps 20-75FPS

system
CPU Intel Pentium 4 HT @ 3010.8MHz
GPU FORSA 9300GS 512MB DDR2 64bit not overclocked (PCI-E x16 2.0/ OpenGL 2.0)
RAM 1023.1MB DDR2 667MHz Dual Channel (KINGSTON 512MB 333MHz x2)
MOTHERBOARD ASUS P5PL2-E
400W CoolerMaster Power Supply+CoolerMaster Fans
19" LCD Monitor(1440x900) Samsung SyncMaster 961BW and SURROUND 2.1 Speakers
Windows XP SP4