My game seems to become very incoherent when i try to attack an enemy base..The response to commands and the graphics chop along and seems as though there is little response to walk forward back...ect almost like i don't have the right refresh rate or something.My marines or officers are rocking back and forth looking at me stupidly between upright and diagonal to the ground? The smoothness I have in space or when at a nuetral or friendly base seems to disappear, any ideas on whats going on or how to fix it would be appreciated.