wierd mouse?

Hi XJ, i just reformatted my pc, and eveything went fine, i installed cs and everything i had before, when i should start cs and playing something was wrong.

the mouse feels so fast or idk, not so un-smooth but very fast or something
like when i bhop and i strafe it suddenly can get a wierd feeling like non control and the mouse poops away hmm.

same things when i longjump, i cant get maxspeed even if it feels like i jump like i did before :s

I Use g500 no set point, or mousefix.

very hard to explain, but if u have experience of this u might understand

Hope someone can help me
Best regards mmk!