Well in options under content I found what you have to do. You have to select the disable websites from using there own fonts. This however makes most sites look a bit ugly so I saw an addon called squint no more someone linked going to give it a shot and hope it allows websites to keep there fonts.
Well with just a few clicks I was able to increase the size for all websites while keeping there text and there layouts so i have to say its a nice little addon for anyone else who is running high res on a smaller screen and having a hard time seeing there sites. You can change it to increase the size on all sites or you can define how large you want to increase the text for different domains so you can tweak every site you go to a bit different if some already have large enough text.