The game is a horrible port from consoles, its not optimized for PC, I still get awful stuttering and bad fps drops (PC specs below), its sad because I want to give this game a good chance, but I simply cannot play it, and this is why they are bleeding player numbers, they should of done a better job porting the game.
Currently running
Core i5
Nvidia gtx 580
8gb of ram (no game even uses that much, ghosts only uses 2gbs of ram)
64bit windows 7