I mention something release day, but no one else at the time seemed to be having the same issue.

When Im play it appears that my mouse movement is sluggish or laggy.

My hip first and my down barrel aim seems to just be sloppy. Its not a huge difference, and in my case, if I hadnt played BF3 I probably wouldnt know any better

At first I was thinking I needed to update the driver for my UIs, but that didnt seem to do any good.  

Is anyone else seeing this when comparing between BF3 to BF4

My UI
Keyboard: Logitech G510
Mouse: Logitech MX518

I have a ballistic mk1 mouse and though it can go to 8000 dpi I find a lower dpi is better. Compared to BF3 I do notice my character moving ever so slightly slower, but that was the beta. I've yet to pay on the released version.

I also have a logitech G15 game-pad rather than bashing my main keyboard.

I use a G510 keyboard and a G700 mouse and they seem fine. If only I could figure out why my game crashes every ten minutes or so.

I also use the same mouse and have similar problems. In fact it sometimes locks up completely,can't  turn,fire anythings except move forward and backward.
I tried updating my drivers,but there wasn't any. Can't find my cd for it to reload the driver. That's one of the reasons why i'm not playing much,just get killed
all the time. Went money is available I'm planning on getting a new mouse.