Sweethappypants

My issue is roughly the same; however, I do not have Disc 1 installed. From day one I installed Disc 2 and that is all. I tend to have response lag (pressing a button on the controller and the action occurs about .5 seconds afterwards) when playing Spartan Ops or Campaign. For War Games, I have played games where the screen would go black (acting like it is changing hosts) but the people in the game inform me that they are playing and I am running off cliffs.....quite frustrating. Playing games of SWAT, constant headshotting eachother kills and the replay shows them either firing after death, or firing no where NEAR my body/head for the kill. Like UNSEENZ, my internet connect is perfectly fine. 22.7 down, 4.3 up, 5ms ping. So reasons for lag behoove me. Any help, if established, would be greatful.