I left mine on x2 for several hours (accidentally) I had ll villagers when I left. When I came back, I had 61 kids, 8 nursing moms holding 9 babies and only 4 men. When I left they had around 27000 for food and when I came back there was like 900 food and all of the men kept researching. I had to sit there for the next hour dropping them in the ocean until most of the mothers were done and some of the kids were 14. Since then I don't leave it on x2!