GTA SA extreme FPS lags.

[thiaZ]

Hello guys, since I installed Windows 7 Ultimate x64 yesterday, I have extreme FPS lags on LVP. I play on 1680x1024 and I've about 25-30FPS, I can't fight and I can't do anything else. With Windows XP which I had installed before I had at least 70 FPS. I already tried closing all not-neccesary programs and I exetuted the TuneUP "Turbo Mod" which gave me +2FPS. There's no problem with any other game, it's only Sa-Mp.

So my question is "What else can I do to get more FPS?".

//oh if  this is the wrong section here, please move it.