Already disabled acceleration, but the smoothing is still there. Is there any way to disable it?

You can try setting:

iPresentInterval=0

It sounds as though you've already set

bMouseAcceleration=0

If not you can try that too.

Added iPresentInterval=0 and it's working now... thanks!

Just keep in mind that doing this may have a couple of side effects such as:

• When you are in an indoor cell that is small or smallish, you might hear a lot of clanking sounds like objects falling off things even when this is not actually happening.

• You might see water clipping effects when there is no water anywhere or while you are near the surface of water but not actually under water.

• You may notice that objects are even more likely to go flying chaotically when you walk near them.

There may be other side effects too that I'm unaware of.