My game ran slow and crashed a bunch when I first made satellites. Later I made them at an even faster rate and it seems to be permanently crashed. It seems like it's not built for you to focus production on satellites. If that's how you're doing it, I suggest not letting people work on that to speed it up. The way the game is designed it's generally most efficient to design planets to focus on one type of building, and then when you run out of resources sell everything and redesign for something else.