I'm tired of seeing this in this thread. GTA IV was one of the first "proper" games to use the RAGE engine. Red Dead Redemption was the second (although it wasn't released on PC) look how well that runs and the graphics quality, especially the water. Max Payne 3 was the last game R* made that ran on the RAGE engine and look how well that runs on PC. If you can run MP3 then you should have no problem running GTA V unless they rushed the PC version, and if they did that there would be a patch within the first month that fixes it.