I've had - and still do - this wierd problem where my cursor is really, really slow and choppy. I've tried everything. Changing my dpi, cursor speed, sensitivity etc. I am using a Roccat Savu mouse. If I use my touchpad (playing on a laptop) there seems to be no problem.

So far I've not seen anyone have the same issue. If someone is aviable to help, please do.

I'm going to try another mouse once I get the chance, hopefully that will fix it.

Fixed it. I ended up having to change my computer mouse, wierd (I have never encountered any problems with the Savu - mouse name being mentioned earlier).