BF3 causing stuttering

Hey, i was playing bf3 right now and it was stuttering - i don;t know the technical name for it. It was not the server nor my connection. My gpu can easily handle it- i have had over a hundred hours played in the game with no problems. IN FACT I JUST played it a few hours ago- the setting are the same. My gpu temp is at 65 C. Which i believe is fine. My cpu had been going to 87 C- i have been waiting for getting a cooler. But i stopped playing cause the temps were too high. So then i played for about an hour today on lowered settings and it was at its highest of about 84 C. did i burn out my 3570k?

if that is even possible

lol no my mouse receptor was away from my mouse 

Dude, get a fan on that CPU! 84-87C is realllly cutting it close when your TJMax is 105C (It'll start throttling in the 90s). I wouldn't doubt it if a lot of the choppiness is because of the CPU getting hot. Even if it wasn't, I would be very uncomfortable with a CPU that hot.