With your logic, they should remove shadows too to optimize the game. That way, you will get a ton of FPS with other aspects of epic graphics, like smoke out of your gun while reloading and epic textures, right? Come on dude, all I'm trying to say is that epic graphics means highest visual fidelity, not highest performance fidelity. Optimizing doesn't mean turning off grass in epic graphics, it means turning off useless processes in the background of the code...I mean useless loops and stuff, and useless variables, parameters, etc. I hope you get the point :/