I'm using windows 10 with 8GB of ram and 7th gen i5, so i don't think it's a problem with my hardware. Perhaps there's a problem with memory allocation in windows?
Here's a quick peek at what i'm working on. Right now most of the assets are placeholders, since i'm mostly focusing on the code to begin with, but you'll play as the robot that's currently floating, instead of the pair of jeans holding the gun, once i add legs and animate it. The normal map isn't good because I didn't use a "height map" style image to make it.