To see which AI's are most successful, I have played games in cheat mode with uncovered map (ctrl-U) and autoplay (ctrl-Z) a couple of times now without interfering in the game myself.
Lately however, this has become practically impossible, since the game crashes constantly, that is every couple of turns. Often this happens during quicksaving, CORRUPTING the save-game in the process. I'm not quite sure how rampant these crash issues are during normal gameplay, but I would really appreciate it if you could actually watch a game without it crashing, most especially during saving.
By the way, this was with the current version 1.11