I would just double check all of you in game settings.
I will thank you if you answer those please:
1) I got a bug, in-game, Zombie, Multiplayer and Singleplayer I cannot see my Reticle of the Sight i am using. I tried all sights, none of them works. I got Intel Hd 4000 graphics, please if someone can help me or someone here maybe makes a file which may work or something like that?
2) Is there any level hack? I mean, there was one for MW3 that I used, but now on Black Ops 2 it's really slow leveling too, please tell me is there?
I would just double check all of you in game settings.