Any workaround for mouse sensitivity at high FPS?

[digitz80]

The higher the framerate, the lower the horizontal mouse sensitivity goes. Strange that it doesn't seem to effect the Y axis, only X.

Is there any way to get around this? I would love to be able to lock the game at a smooth 100 fps or even 120 fps if the game slider went up that high (I play with a 120hz monitor), but the mouse sensitivity goes way down to an unplayable level. So, I have to put it at around 60fps. Not gamekilling, clearly 60fps is respectable, but when your used to 120....

I suppose if I used a mouse that had a DPI toggle switch that could pump it up to very high levels, that would work, but then the sensitivity of the cursor and outside of the client would be crazy high.

Any solutions? or just live with it? :-x