it doesnd haveto be at the most optimal settings or even medium.. but just got enough so that the game doenst move like its running at 1 FPS (kinda like when youre trying to watch streaming movie or a movie file on a PC that doesnt have enough memory).
http://www.amazon.com/gp/product/B009A178BO/ref=ox_sc_sfl_title_1?ie=UTF8&psc=1&smid=ATVPDKIKX0DER#productDetails