For some reason when i press the forward button, the character moves forward AND a little to the right, like he is trying to strafe.

I checked the binds, even set to the default but no differences :\

It seems caused by the integrated graphic card, an Intel Graphics 520.
So i switched to the dedicated card (an NVIDia card) and the movement is fine, but weirdly enough the loading times seems slower!

This is not caused by the graphic card, but by the lack of Vsync option in the game, so for fixing I had to force the Vsync in the graphic card panel.