There is a particular outstanding CTD during the century of blood bookmark with Aurion that has appeared in my playthrough so far, currently at a descendant of Aurion.
The Others have appeared and there should be a war for the dawn, the night's watch has fallen.
But if any player (AI or otherwise) wins the war of the dawn, the game will immediately CTD.
There is also a weird bug with betrothals, may or may not be related to Valyrian religion. Somehow its possible for girls, after being betrothed to not be registered as betrothed and thus be eligible for another betrothal. If this is allowed to proceed normally, somehow the girl gets two husbands but only one acts as the official husband, the second does not produce any kids with them.
The Others have appeared and there should be a war for the dawn, the night's watch has fallen.
But if any player (AI or otherwise) wins the war of the dawn, the game will immediately CTD.
There is also a weird bug with betrothals, may or may not be related to Valyrian religion. Somehow its possible for girls, after being betrothed to not be registered as betrothed and thus be eligible for another betrothal. If this is allowed to proceed normally, somehow the girl gets two husbands but only one acts as the official husband, the second does not produce any kids with them.