Originally Posted by houdini

Hey antihexe! Welcome to TG!

I have a 9800XT as well...running an Intel 3.4GHz with 2GB RAM.

One thing I did to help the mouse lag was to install ATI tray tools and set the "Flip Queue Size" to 2 (it was previously set at 0). This is similar to the Nvidia's max frames to render ahead setting. ATI Tray tools allows you to tweak settings you can't get at with the Catalyst Control Center. A setting of '0' is supposed to give hyperthreading CPU's a bit of a headache (mine is) so that seemed to help alot.

Try these tweak guides as well:
*

and
*

Using both of these guides, I've significantly improved my frame rates, though it's still not perfect.

I've done the following:

1) Updated ATI Catalyst to v6.5
2) Updated my motherboard drivers
3) Played with the GRAW settings in the main config file

I also got a new soundcard and dumped my onboard sound. I should have done this ages ago, but kept putting it off simply because I never had a problem before GRAW. Got an Audigy card. If you're running onboard sound, I'd seriously consider buying a sound card.

Hope this helps. I'm not sure about the keyboard bit, but I bet its related to general gameplay lag due to overtasking your system.

Thanks a lot, I've done most of that, with the exception of the drivers (I use omega drivers, since I get a big boost in performance usually)...

And as for the keyboard lag, I don't think it has much to do with overtaxing my system, i've set it as low as possible, it just wont work correctly. I do have onboard sound, and I haven't had an issue with it so far, but I am curious as to what issue you had with your onboard.

The mouse lag, I have heard of and I did get that cleared up.