What difficulty level? This seems typical for me for a game on king when I'm not focusing on fast science. I'm not feeling much of a difference in my current king-level game - I could research industrial age techs at the end of the global medieval era (although I'm waiting to finish any for the era score for the next era). The only thing I'm noticing is that it seems that two or three civs were slowed by barbs (of nine opponents on large map).Observations on the increase in late-game tech cost: So, I fear the concerns about raising the tech/civic costs in mid- to late-game may be coming to fruition, at least with games in epic/marathon. I believe the change was made originally in order for players to better match the Global Era with where one is on individual era. However, I am noticing with my current games that the AI isn’t adapting to the cost increase well, which affects the Global Era timer greatly.
In my current game, I just hit modern era techs and civics while the Global Era is still in Renaissance. Looking at the AI on the tech/civic trees, there are some really bad stragglers, (i.e. Germany just discovered Metal Casting, while I am just about to hit Flight). Granted, I don’t have many science or culture civs in the mix, but I figured the AI in general would have been tuned to build more science and culture districts to stay competitive with the increased costs. I am a bit disappointed, because I had hoped the new change would have made the late game flow better.