I supsect this has something to do with how the simulation works, but I'd thought I'd ask you guys.

When undisturbed, specifically with gravity and air modes all off, almost all gases will gradually migrate to the bottom right of the window.

What's the cause of this? And is there a way to stop it? I'm trying to build a simulation that's dependant on the even diffusion of gases, but they just all pile up in the corner.

Thanks