The AI seems irrational now. They'll be your friend for a while, but then randomly they'll insult you about your army or something...and then you see that you and them are hostile. What??
For instance one game I have three other civs with me on a continent and on another, nearby continent there is another, Egypt. Me and him were cool for the longest time. We had a research agreement, trade and a pact of cooperation and even a pact of secrecy against another civ. And then randomly he starts insulting me. And now I can't trade with him again because he demands more from me than he'll give to me. It makes ZERO sense. There is no reason we should be hostile.
Washington is annoying, too. "GO AHEAD.....GO AHEAD...GO AHEAD". They didn't record many lines for the leaders. Every single time Elizabeth asks something from me its ARE YOU INTERESTED IN A TRADE AGREEMENT WITH ENGLAND?!?!