the barbarian turns are the only thing that seems to take a bit longer than usual (like a small 10 secs loading when they "finish"), but I usually have no crashes (unless I take over half the map myself, then it will sometimes crash in late information eras and then I won't be able to load the game back). It's one of the reasons that made me stop Yet (not) Another Earth Map Pack, as this happened much earlier with all the AIs, the gigantic map size and barb abundance.