Enemy On/Off visible

[OugaBooga]

Honestly NO1 has this problem?
I do NOT have some sort of "ODD" sys config.
It's basically 2 gtx's & a 780i board running win 7 64bit.
There is nothing ODD or Special in my configuration.
WHY am I having this problem seeing an enemy in direct sight & NOT seeing them.
IS this a problem of running 1920/1200 -16/10?
yea I CAN REMOVE A CARD & OR DISSABLE physics but this still doesn't solve the issue.
HONESTLY if i have to remove 1 of my vid cards to play this game it doesn't make sense to keep the game.
NO excuse for a modern game not using sli/xfire.
I hope some1 with experience tells me what i need to do PLEASE.
BTW>>czest do moich bracie !! ,I have family that lives in podkarpacie area.
mnie potrzebna pomoc w tej grze prosze !!! Love from Canada !!