The amount on the gravity booth produces needs to be fixed. On the current build at 280 they produce 382 quadrillion but here in the beta they only produce 7 quadrillion. It's the only one that was lowered so I'm guessing someone put the wrong math into it.
The lag seems to be linked to the "Build in steps of" buttons. The lower the step the more lag i get. At x100 it works fine but if I select x1 it lags to almost a complete stop.
I really like this game but the glitches with it freezing or elevators breaking then quitting out and trying to reload a save that seems to not exist makes it a bit annoying.
Seems to have a lot of issues, especially with the physics. At one point I had the girl jump on one of the windmills and the thing went flying across the screen and another time I jumped on a rock and the thing bounced up. It does have some potential though.