reduce lagg

[loeis]

GTA IV is really lagging much. is there anyone that knows how to reduce the lagg, because it is really not playable. I tried many ways to do it but nothing worked. i tried to set the graphics as low as possible, downloaded razor gamebooster and I downgradet my computer to windows xp (its windows 7 again now). I would appreciatie it if someone would know how to reduce the lagg.

my computer:
processor: Intel(R) Core(TM)2 Duo CPU T6400 @ 2.00GHz 2.00 GHz
type system: 64 bit

[ProNinjaCat]

Knowing Your Graphics Card And Amount Of RAM Would Be Nice

[loeis]

RAM is 4.00GB (3.5GB available) exactly 4096 mb
GeForce G200

and I was watching The Walking Dead and saw that Dr. jenner had the same computer as me...

[Minykootra]

I have Hyper-threaded Intel Pentium d 3.4 GHz 4gb ram GeForce GTX650 win 7 ultimate 64bit and it lags like fuck! i even have setting at lowest possible... help?

[mentalsuit2]

Try updating your game if you haven't. I updated mine and now its really smooth