as i'veld in my earlier post ihave a ati hd2400 pro card.i know its too weak for playing games but its alright for me.well the problem is that when i play assassins creed brotherhood(the game runs slow but thats not the problem)during a video characters speak before their mouths move.the timing for the sound of what they are saying and the movement of the mouth is not right.Well u might think that it is due to low game card and processer but the same thing happens with those games too which run alright.....plz help me ,this sound problem irritates me alot.