Mouse Sluggish/slow Acceleration

[Tygran]

I have seen several other mouse threads, but the issue they describe does not seem to relate to what is happening to me.

 

The mouse acceleration seems to be off when I am in a menu that has a cursor.  The effect is not nearly as noticeable when there is not a mouse cursor, but is still present.

 

Whenever I move the mouse it moves slowly for the first .5-3 seconds then jumps up to normal speed.

 

I have seen topics discussing graphics, etc.  I have disabled everything, and still have the problem.  (Get about 300 FPS at that state).  I have also enabled everything except v-sync, and still have the problem (around 100 FPS).  I have enabled v-sync, and still have the problem (around 60 FPS, then drops to about 45 fps for around the same amount of time as when I move the mouse, then jumps back to 60 fps.  I may be getting a drop on the frames above, but couldn't tell).

 

I have tested, and confirmed that my cursor does not move as far.  If I go quickly, from the left most to the right most of my motion, I get about 1/4-->1/2 the screen distance.  When I move slowly, it doesn't even take the full range of motion to get all the way across the screen.  Similarly, when I do not have a cursor (IE, on the liset(SP?), not in a menu), full range of motion quickly gets me about 225 degree turn, whereas a slow movement of the mouse is around 720 degree turn.

 

I could not find anything to deal with mouse acceleration, so could not enable/disable/change/test that.

 

I could not find anything with mouse sensitivity, but aim sensitivity (which I assume is the same thing) does nothing to fix this problem

 

I believe that this only started to occur after update 14.0.

 

If this is working as intended, please let me know, so that I stop trying to fix my computer/game.

[Athros]

Maybe Windows' mouse acceleration is at fault? It could also caused by your mouse's DPI settings (if it has any), since it relates to CPU usage.