Hers My Spec,
Pentium 4 2.4Ghz
Msi Intel 845E Max2 Mobo
512 ddr 2300
Creative Geforce 4 Ti4600, Latest Drivers
Creative Audigy 2 Platinum Ex
20 Gig Ibm Deskstar
80 Gig Ibm Deskstar
Msi Cd-Rw 48/16/48
Creative Dvd Rom
Aoc 17in TFT Monitor
Alls i can say is GP4 is Wicked on My system,no slow downs or anything,Im using 2003 Megapatch, and all cars are 2003 High Display Models
If you have a System with Onboard sound and Graphics,Thats probably where part of your problem is.
has before i got my Creative Audigy 2, I was runnin onboard sound,Realtek Audio 5.1, which was Ok, but not Brilliant
:O
Also ive always steered away form onboard Graphics, Because if your runnin a Proccesor Under 1.5 Ghz your goin to Struggle.
Thats my Personnel opinion by the way,
Make sure all your Drivers are up to Date, Ie:-Graphics,Sound,Mobo,Os Updates,and not forgettin the game patch
Hope this helps Some
TERMINATOR-T-X