This might be a very basic question about the game but why does the air/pressure simulation occurs in 2x2 or 4x4 tiles? Wouldn't it give even more accurate results (even if not perfect) if we could simulate it down to the pixel? Or is it because of some parameter within the code itself?
It's very laggy to increase the resolution, from my experience. It's a relatively simple change to do, if you know how to edit the game code (I unfortunately can't remember how to but it shouldn't be too hard to find on google).
Main thing is, you're going from 4x4 tiles to 1x1 tiles, which means there are 16 times more of them. If you do try it (which I'd recommend), don't expect much over 10-20FPS
Thanks for the answer. I'll try with a 2x2 resolution first, then. Just to make sure, the line of code I should change is this one, at number 128? Or is there another places where I should update the code as well?