I dont know a lot about pc specs so i bought a prebuilt one: https://www.amazon.com/CYBERPOWERPC-GXIVR8020A4-Desktop-i5-7400-7200RPM/dp/B0747W15QL/ref=lp_8588811011_1_5?s=pc&ie=UTF8&qid=1516438027&sr=1-5 but i feel im not getting the fps i should be, im averaging 40 fps in gta 5 on the lowest settings(until i start driving; i get unplayable lag and stuttering) , while in fallout 4 getting unplayable 10 fps on medium. On the customer Q&A on the link provided, others who have this same computer talk about easily running gta 5, overwatch etc on high, whilst i struggle to play these games on low. Am i doing something wrong or what? I know little about pc specs and parts, I only know how to install steam and play games/youtube.