Hoping someone who know what they are talking about can help me here. I have this piece of shit laptop (Lenovo y580) with HD 4000, GTX 660 and a VGA output. Can I plug in a CRT and get 120hz? The reason I ask is that it has this Nvidia Optimus crap on it which apparently causes problems with high refresh rates. I can't find any confirmation on whether or not this will work.