I wondering if anyone has a technical answer for why graphics in MMOs need to be toned down (not as detailed) compared to single player games. I thought that only information about player location, action, NPCs etc. is sent between the server and the player's PC so internet connection is not really a factor. That only the player needs a PC capable of rendering the graphic's files already installed on their hard drive, which many do evidently by highly successful and graphically intensive single player games released on PC. So why aren't MMOs produced with the same level of graphical detail? Are the limitations technical or is it more of a development time/cost issue?