Several patches back I used to be a consistent Deity player, but I think I rested very heavily on the crutch of being good at the early game, and slingshotting upwards. Since the balance patch that added the new difficulty scalers, I've been knocked back to Immortal, and even then I really struggle. I've been trying to analyze my play to figure out why, and I come to the same conclusion: my early game is still really good. It falls apart roughly about Renaissance. What's happening is I start teching faster than I can start building, and I get hit by decision overload - I'll settle a new city, and when I have Amphipheatre, Arena, Barracks, Council, Granary, Herbalist, Market, Monument, Shrine, etc., I'm not able to meaningfully compare them very well. I don't face this problem in the early-game because the pool of possible choices at any given time is much smaller and you normally have much more imminent goals (settle here, put military units there), whereas by midgame your goals are start stretching beyond the immediate horizon. By late-game, if I've survived that long, there's usually one obvious win condition I know to pursue. So basically: how do you decide what to build when settling new cities or building up underdeveloped ones when you have so many possible choices?