Something odd occurs in the city panel sometimes where it reads x turns to build a unit, then when I click on it, the number changes to 2x. This is a lot more than 10%, obviously, and my response has been to not build units there. TBH, I haven't spent time figuring out what's going on. This leads to your larger point about how we're supposed to be playing with the new system. Broad strokes, I think it's too early to say definitively. My sense, though, is that it's a terrific improvement partly because there's no simple go-to answer. To optimize, you have to make a decision about trade-offs that is not so cut and dried. That said, I think tu_79's comments are on point. It's essentially what I've been doing. In my own case, I've always manually assigned all my GP production, so there's no adjustment necessary in terms of process.