Really? The game doesn't even use 2GB of ram. Your pc has to be pretty outdated for this to struggle. I am running hundreds of enemies at once, no problem, and I have a best buy $250 dollar pc... It's really a junk pc. It's like 6 years old too. And it runs the game with no slow down other than the initial extremely small spike when a new portal activates a couple minutes in for spawning new bad guys. But it only lasts half a second. Strange, I'll look into it. My computer has a harder time running RPG MAKER games... Which is super non-demanding too.