Suddenly lag...

[Polshy]

I play always in the low options, because my laptop cant run the game so good. I use gamebooster to optimize the game a little bit and it works very good! When im lucky i can play even whit the medium graphics (i dont know why this occurs), but now the game is so laggy  :ticked: ! I have all graphics in low and i use gamebooster, why this happen?.

The game started to do this after i installed the final version of the   launcher AllIn1, but i dont think the launcher is the problem because   other launchers doesnt work either.
What can i do?

My System Specifications:

    * Operating system:Windows 2.6.0.6001 (SP 1)
    * CPU type:Pentium(R) Dual-Core CPU       T4300  @ 2.10GHz
    * CPU Speed (GHz):2.12
    * System memory (GB):3.93
    * Graphics card model:Mobile Intel(R) 4 Series Express Chipset Family
    * Graphics card driver:igdumdx32.dll
    * Desktop resolution:1366x768
    * Hard disk size (GB):454.041
    * Hard disk free space (GB):336.826


And the worst part is that i cant buy a new graphics card because of the chipset...  What can i do to optimize my laptop? Is an Acer aspire 5738-z.


Thaanks.