Been playing around 18 months, getting better with still a lot to learn.

Couple of weeks ago my PC gave out and since then I'm really struggling with the following.

First my laptop, using the same mouse, the cross-hairs just keep jumping two or three mil and It's impossible to line a shot up I have to wait till it's close and hope for the best.

Second try was my PC I use for my work printing and it's exactly the same.

The laptop is on a wireless connection and the PC is on an internet dongle, could this be the reason or has it anything to do with graphics cards.

I've tried a different mouse, looked at the mouse settings but couldn't see anything to change.

I don't think I can carry on, it's too irritating.

Any ideas, suggestions would be appreciated.

Thanks

Screen resolution? Maybe you need to higher that