Ok, so I'm close to my last option here, I've been experiencing this issue for a good month now. I have a windows 7 64 bit OS on my bootcamp partition, ran fine for a while but i started to notice little hiccups when gaming. cutting the story shorter, this "stutter" lag is starting to really annoy me. It runs fine for 1-2 seconds, slows down, the catches itself up again, runs fine for 1-2 seconds, slows down, then catches itself up again...rinse and repeat. My specs are as follows: Macbook pro9, 2 8gb ram (2x 4gb slots) intel hd graphics 4000 intel core i7-3520m CPU @2.90GHz cirrus logic CS4206B (AB 82) & Intel display audio cards. (Need anything else I will let you know) I tried the normal things, changing graphics settings, resolutions, V-syncs, all combinations of settings. No matter how high, balanced or low the settings were it didn't change a thing. So I used my limited PC knowledge and updated windows fully, all my drivers, I went through task manager and changed priorities and closed background items. When that didn't work I re-installed the games that were affected and to no avail it was still lagging. Here are the list of games that seem to be affected: Evochron mercenary Dead island Payday the heist after that i hit the forums, i went through the singular games forums to find if the game was the issue, tried all the solutions possible and nothing changed. Then I looked at windows 7, bootcamp, hardware bugs, software bugs and mac issue forums and all the solutions on there are not working. (I may have missed a few you are welcome to ask me if I have tried something or not.) When that didn't do anything I heard about sound cards causing similar issues, so I went to update those drivers and the Intel one worked fine but my cirris logic card apparently doesn't exist...anywhere on the internet no driver updates are found, even on their own site. eventually the sound card stopped working so i did something i was putting off as a solution...re-installing windows on the bootcamp...the sound card worked again thank god but the stutter was still there...infact it started to affect a game that it had never affected before Payday the heist...I know this machine can run that game. Before I took out windows and put it back in the game ran beautifully. So at the end of my tether its a shot at the forums or a trip the the apple store. A friend of mine just told me that he knows someone that had a similar issue. the issue was that windows recognized 8gbs of RAM but only used the 1 slot of 4gbs. When he changed the one slot to 8gbs and the other was empty...it solved it. is this true? I would love to know. Desperately need the help. Thanks for reading, i know it's a bit long, if you require anymore specs or information tell me and i will put them up. This is the first time posting on a forum.