If your pressing your forward walking button, then press any other directional button, such as "Starfe Left" button, the game makes your character sprint. The pressing of the directional button maybe of pressing "Strafe Right" then "Strafe Left", or vise versa, or just pressing the "Walk Backwards" button twice quickly like your sprinting, the game makes your character sprint.
This is caused if your holding the "Walk Forwards" button.
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