[SOLVED] Call of Duty 4 lags

[AveragE]

Hey guys

I have a problem with my call of duty 4 game. when i play online i get lag only when an airstrike is sent in and the lag gets really bad.
i bought a geforce 9600gt graphic card the other day thinking that would stop the lag but it is still occuring in my game.... i meet all the requirements for my pc to play the game.
At first i thought it would of been my motherboard because its a basic type but the motherboard doesn't make a difference
here is what i have in my pc:

AMD Athlon 64X2 4200+
Abit motherboard ( Thats a basic motherboard )
2G of Ram
9600GT Geforce video card

I Don't know if my CPU isn't fast enough but it meets the requirements soo if anyone can help me then it would be much appreciated
Thanks

[Zombeast]

is vertical sync on?

[AveragE]

Where is that??

[Zombeast]

under the graphics menu(i forget but its where you change your graphics)

[AveragE]

It doesn't say vertical sync but it says sync every frame.. is that it?

[Zombeast]

try turning down some options and see if that helps, first start with nothing, everything down, thenplay, does it lag? if it doesnt then slowly start to put some somestuff up, but slowly, and check each time if it lags, until yo feel comfortable and it runs smoothly.

[pokemoncatdog]

If it is not laging in offline play it is not your pc but you internet connection.

How fast is you internet connection? you can do a speed test @ speedtest.net

[AveragE]

It lags in campaign mode too. And with all my graphics down it still lags.. Its not my graphics card or internet, it is something else.

[AveragE]

I think it would be something in my PC, because it can't be the internet. i can't even run it with no lag on low graphics

[koala]

What make/model and total watts is your PSU? If your computer is not getting enough power, this can lead to overheating and lag in games.

Make a note of your temperatures and voltages in BIOS, then check again while playing COD4 with SpeedFan, and monitor the graphics card temperature during gameplay with nTune in the nvidia control panel.

Have you made any changes from default in BIOS?

Try installing the AMD Dual Core Optimizer, then reboot.

The AMD Dual-Core Optimizer can help improve some PC gaming video performance by compensating for those applications that bypass the Windows API for timing by directly using the RDTSC (Read Time Stamp Counter) instruction. Applications that rely on RDTSC do not benefit from the logic in the operating system to properly account for the affect of power management mechanisms on the rate at which a processor core's Time Stamp Counter (TSC) is incremented. The AMD Dual-Core Optimizer helps to correct the resulting video performance effects or other incorrect timing effects that these applications may experience on dual-core processor systems, by periodically adjusting the core time-stamp-counters, so that they are synchronized.

[AveragE]

I got a 650 power supply so that is plenty of power. all my bios settings are default so i will have a look at the power and speed it is going. i installed that dual core optimiser and reboot so is that it?? or do i have to do something else?? Thanks for the help mate

[AveragE]

CPU fan Speed - 3000 to 3050 RPM
System fan speed - 1150 to 1200 RPM

CPU Temperature 33 to 35 degrees
System temperature 33 to 34 degrees
Would any of this have any effect towards the game?? i got about 3 or 4 fans in my PC but my PC case is a big one that came with 2 of them.

[AveragE]

That AMD dual core optimiser doesn't make a difference

[AveragE]

i fixed the problem
it was my anti virus, i had to make it allow the game
thanks for your help