The game worked a bit better before.
FPS varied in a fluid way.
Now when off-line i get poor fps but not on-line !!!

If I look to the ground, fps goes low about 25 or 30 or LESS to return to about 50 when i look to the sky.
The problem is that It jumping between 25 and 50 without mean values.
Here intel 2.2 GHz and ati 1650 or x1650 if i remember well.

P.S.
If somebody would tell me which is the function of weapon sound, I will say TY.
In game I cannot hear anything associated with this sound option. Why we have it?