I have pretty much half that performance of the system you listed - 700 MHz P3, GF2MX.
I can get 20 FPS in towns on this system. Something is wrong with your system somehwere thats' creating a bottleneck.
You cannot make anything fool-proof. The fools are too inventive
GW: Tr Gandhi (Ra), Shiva Sung (Mo), Mangal Pandey (Ne), Rana Pratap Singh (Wa), Boddhi Satwa (Ri), Bhagat Singh (De), Bahadur Shastri (Pa)