Fun game! Unfortunately, the more I progress, the more the game seems to freeze. I've progressed to 27%, and I've started timing the freezes. If I don't touch anything, it tends to work normally for 4-7 seconds, then freeze for 4-7 seconds, then work again.
If I move something, place a construction site, or even scroll, it usually freezes for about 10 seconds.
Is anyone else having this problem? I'm playing on my laptop, which sometimes freezes or crashes when I play certain games, but it's only ever done this before if the game has complicated 3D graphics.