Sprint bug

Put the summary of the bug you're having here

When I'm pressing double W I expected that I was going to sprint then, but that was very wierd, the camera view was moving back and forth, and the most annoying thing was that I was not actually not sprinting at all.

What I expected to happen was...:
That I was going to sprint.

What actually happened was...:
the camera view was moving back and forth, and the most annoying thing was that I was not actually not sprinting at all.

Steps to Reproduce:
1. Sorry I don't know much about Computers etc.