Horrible lag and stutter after a few minutes

Enlisted: 2011-10-28
2013-09-22 00:10
I took a break from playing Battlefield 3 for a few months and I come back to playing and my game will stutter and start lagging pretty badly after a few minutes of play. Before i took the break I was running everything on High-Ultra and now I'm receiving horrible stutter and lag even on normal and Battlefield is the only game doing it. Every other game runs fine I'm not entirely sure what the problem is.

My computer specs are

Operating System
Windows 7 Home Premium 64-bit SP1
Intel Core i7 3610QM @ 2.30GHz
Ivy Bridge 22nm Technology
12.0GB Dual-Channel DDR3 @ 798MHz (11-11-11-28)
Alienware M14xR2 (U3E1)
S230HL (1920x1080@60Hz)
Intel HD Graphics 4000 (Dell)
2048MB NVIDIA GeForce GT 650M (Dell)