It depends partly on how much could go wrong--or spectacularly right!--while I'm away.

For tonight, I'm confident that my villagers won't a) starve and/or b) finish a project that requires reassignment of job-preferences immediately afterward. So I'll be leaving VV3 on Fast speed--probably the first time ever--so they can keep on earning Tech Points and working on 3 different building projects. Other nights, I've always run it at Slow or even paused it.

My only worry is that my assigned Doctor will die of old age and somebody else will get sick and die afterward. Based on past performance, however, the chances of the last seem remote.

Of course while I'm actively monitoring, only Fast (1 hr = 1 Isolan year) makes any sense.