How do I change mouse sensitivity?

[swissarmy 1]

I'm experiencing two problems.

First, I have lag between mouse movement and image movement on the computer. This may be due to the type of computer I'm running on (a laptop with a Core 2 Duo) and the graphics card (ATI Mobility Radeon HD 3450).

The second is it doesn't take much mouse movement to get a large move on the screen. This is very annoying.:mad:

Two questions:

1. how can I diminish the lag between mouse movement and the image? Reduce the resolution? Change something in the .cfg files? In the .Arma2Profile file?

2. how can I decrease the sensitivity to mouse movement so it takes much more movement to generate the same screen movement as before? I've played with the X-axis, Y-axis and Smoothing scales in the Options>Controls section, but with no satisfactory result.

I searched for previous posts (here and on the Armaholic forum) but these were very cryptic. I also searched the wiki, but no joy....:(

I posted in the Armaholic forum, but in 3 days have not had any response.

Thanks in advance for the help.

[defwen 12]

Try disable VSYNC.

Anyway, It's easy to use Google.

http://www.google.com/#hl=en&site=&source=hp&q=arma+2+mouse+lag&oq=arma+2+mouse+lag&aq=f&aqi=g1g-bK3g-bsK2g-bK1&aql=&gs_l=hp.3..0j0i8i30l3j0i8i10i30l2j0i8i30.766.3406.0.3609.16.14.0.2.2.0.109.579.13j1.14.0...0.0.RZqxkmbJSOQ&bav=on.2,or.r_gc.r_pw.,cf.osb&fp=571b864f18164b73&biw=1429&bih=923

[Leon86 13]

opening arma2.cfg or arma2oa.cfg and:

GPU_MaxFramesAhead=0;

GPU_DetectedFramesAhead=0;

might help too. But a mobility 3450, way below min requirements.