OK there has to be something software wise that is wrong. If the card was bricked then it wouldn't go full in heaven but then drop down in general games. Wow isn't demanding so low usage is to be expected, skyrim can go low usage but that is dependent on the game settings, Mw2 well I don't play that game so I don't know but it depends on your settings and ress that sometimes will determine the actual load. If there is a software cap somewhere then I don't know what settings that could have been changed to limit gpu load at 50%