It's funny, you hear people talk about it all the time but do you really know what goes into optimizing a PC game? This is a very informative article and the author has even split it into three separate pages to make it easier to digest. Complaints about bad optimization are often shorthand for 'this game doesn’t run well on my PC.' But is that performance really the fault of the game’s programming not being written as efficiently as possible? How do you really know if a game is poorly optimized, or simply pushing your PC to its limits? This article will try to clarify what optimization actually is, give an overview of some technical features like lighting and anti-aliasing which are inherently computationally expensive, and shed some light on how developers actually determine graphics presets and system requirements.