After making a new .cap with a few walls and spawning a small 10x10 object every frame, the simulation 'collapes' and freezes after about 500 objects are made, and starts shaking after about 200. What's more, the simulation won't stay still after enough have been made, as they continually settle. Objects also overlap each other a lot. Thoughts?
Edit: It might be a framerate issue, because after about 100-200 objects, the framerate drops below vsync rate.
Edit 2: Definitely at least partially a framerate issue. Try running the .cap with a fixed framerate of 30 fps - even one square on screen jitters.