Coming back to this, I'm on a much better machine (6core i5, 16GB RAM) now than a year or so ago, but I don't remember AI turn times being that long back then? Or is this simply wrong memory...
Playing vanilla, huge, 12 civs, mid-game there is quite some waiting each turn.
I wanted to try Crusade now, is that better performance-wise?
That aside it turned out I'm now terrible at this game How do I get to Fast Assembly for the Yor, btw. I do struggle quite a bit with them robots now.