I have the advantage of viewing the game from 2 computers when my son gets on and plays. I noticed at one point during a death match in the underground train station parts of the graphics disappear when crouching. I didn't notice it doing such on any of the others but I haven't gone through and tested each for it either. I asked my son who was playing on our home pc to do the same and the same results were produced.

Thanks,
Autumn (Gun Slinging mama)

do you mean you can see through the walls and whatnot? Or does just everything disappear?

If its the first case send a report ticket in with screenshots or a replay file of it

True. I have it to. You see throught the wall, but you dont see the prople behind it.