First, I would like to note that I searched all over the internet for a solution and have yet to find one.
The problem is as follows since about a week or two I have been having severe frame rate issues in games where I didn't before, Fifa is the only one where it shows in gameplay but Deus Ex: Human Revolution and inFamous 2 all suffer from pretty bad stuttering and framedrops when watching in game cutscenes. And as you might expect this is pretty annoying.
So the things that I have done are: run the vacuum cleaner past the air vents trying to vacuum out all the dust that had collected inside the system, I did this after running the fan test. I also rebuild the database but that was mostly a Battlefield 3 related issue. The vacuuming helped for about a day after which it was terrible again, I should note that FIFA 12 is running of a disc while Deus Ex: Human Revolution and inFamous 2 are digital versions.
As for the placement of the system It's right next to a standing wii which is next to the television and the playstation has about 15 cm of space behind it, which is filled with cables. It's an open cabinet so it should have plenty of space.
I've tried to give you guys enough information to solve my problem, so please help me out here Giant Bomb.