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For some reason every time I try to run by using the Shift key (and W) for example, my character just stops moving. I can't get him to run while walking by pressing the Shift key after the W key is pressed. If I press the Shift key first and then the W key, the character just jerks as if attempting to start the run, but then comes to a full stop. Repeating this just results in sort of jerks forward.

This seems to be some sort of bug. I can get around this for now, by jumping forward first, then mid-jump pressing the Shift key so that when he lands I already have Shift+W pressed. Then he starts running after completing the jump.

I am wondering if some config video quality setting could be causing this problem. Does anyone know of a solution to this to allow my character to run normally as he should.

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This sounds more like a hardware problem. – Ramhound Sep 21 '12 at 16:01
I have had a similar problem in another Unreal 3 engine based game. It was resolved when I lowered a video setting (maybe something to do with shadow, but I don't remember for sure). So, it's definitely an engine issue. – Michael Goldshteyn Sep 21 '12 at 16:09
Does this ever happen in any other fps games where you use w and shift at the same time? Do you have any hotkey, key macro, or key repeating software running (AMD Catalyst has hotkeys)? Workaround: sprint is press and forget, so you can tap it and let go and you will sprint until you let go of W. – horatio Sep 21 '12 at 18:48
I am going to try with another keyboard. I do not have any software running that breaks basic Shift-W functionality. I tried "press and release" (of the shift key, while continuing to hold W), still a no go. – Michael Goldshteyn Sep 21 '12 at 19:42
I've had this exact problem before now when using a PS/2 to USB keyboard adapter. Are you using one of these, by any chance? If so, try using a plain standard USB keyboard. If not, then I'm afraid I'm not sure. – user33379 Sep 21 '12 at 22:35

Its either a bug or your keys are acting up.

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