The problem isn't the resolution. The problem is that they capped it on purpose (pretty sure at least). Imagine them getting many complaints/bad reviews/unhappy people regarding performance if they would allow an unlimited resolution. At least from the average user because the unlimited causes major fps problems on the most modern PC's. An unlimited resolution (even if supported by RPG Maker) should only be used by advanced users or by tiny scripts such as picture galleries. But I can't even do it for my picture gallery because they just disabled it for everyone... Any game? Most games are just full HD. In my experience it's pretty must just RPG Maker and a few 2D adult games. Not counting flash games obviously. I'm still downsizing my 3000+ pixel artwork to something like 200. But I knew that when I chose RPG Maker as my engine. Can only blame myself... And like I said before somewhere, the internal code could possibly be optimized. Someone improved the Bitmap.clear() and .blt() methods and scripts like Victors lighting script all of a sudden gain a 20 fps boost when stresstesting. Some lighting scripts like Khas's new lighting script even gained up to ~40 fps. Just by improving 2 basic methods through a dll file in c++... Absurd. At least, if I understood that properly.