So when sprinting and attacking due to the effect of Strafe attack, if you move to an empty space next to a slime, if the strafe attack hits the slime, and the slime splits to that same space you were moving to, the game just freezes and stays in an unresponsive state.

If cursor is still active,  moving with speed point (or attempting if you do not have any) allows for the game to get back on rails.

If really frozen, well i can't help...