I'm playing Saka, so there's not all that much to do, but I still get the turns to go faster by letting the AI choose what buildings to construct (once I've gotten migration and the way of life down pat). Recruitment is my own decision every time, but I tend to keep my precious army of horse archers for pretty long so don't need to do this very often. With one defending stack and one roaming one for raiding, there are only so many decisions to make in one turn.

So yeah, allow the AI to control taxes and construction.