Originally Posted by SailinDawg

Yes, I understand the lag you describe. You have high fps and when you move through a shadowed area under a tree, it seems to take few seconds longer for your crosshair to come to where you want it or it just seems that you put a bit more effort into working the mouse to track a target.

If that's what you're describing, I have found that it's related to ingame settings set too high.

What I really find weird about this game, is that putting settings to low does not necessarily translate to bad looking graphics. What I have cone to appreciate about ARMA is that BIS really tries to create a "world", rather than just a map. There's a lot that is rendered in the current world scene from bugs/moths flying by to the individual blades of grass. The blades of grass/weeds often sway in a slight breeze. BIS really overdraws the world to simulate the real world.

Another tweak I have been playing around with is Riva Tuner's D3D Blitting Tab. I check the first 2 selections and this seems to help alleviate the "high fps" lag. Essentially what the blitting tab is doing is dropping specific rendered frames. It seems to make the driver render a scene a bit more efficiently.

The mouse lag is not only in shadowed areas but in all situations, that's the strange thing, seems to be that the mouse movement is "lagged", permanently in the game no matter what situation you're in, is not as fast as GRAW, Call of Duty 2, FEAR, Old GR, with the same fps for example.
I tried the settings in rivatuner and everithing seems the same

Originally Posted by BHack

Render frames ahead = 0
Vsync = forced off

I have these settings as you said before (with coolbits) and it goes nice to enhance performance in many games ( GRAW...) , but doen't solve mouse lag in this ocassion