So I took my computer to get it formatted to a computer guy (I kept having BSODs and I didn't know how to fix it) and when I got it back its performance dropped from super fast to God awful slow. I can have multiple programs open before I got my computer formatted, for example: Dota 2,Steam,Chrome,iTunes. My computer was still very fast even though I had many things open at the same time. I searched online and updated all my drivers but it didn't solve the performance issue I was having. Can anyone help?