The time factor is a bit badly developed, as far as I noticed. The nursing and crop-growing time shortens, but they don't work any faster, so the food-hunting isn't "catching up" with the accelerated time. Either the villagers needs to move faster with the time, or do more work in the same time. If I leave my village at 2x, they die out of hunger, but on 1x, they always have surplus of food