Not entirely sure or confirmed it for certain but there's an issue with the chaos dwarves that is causing me to crash. And I believe it is the centaurs (I already forgot what they are called) being displayed on the campaign map. I was playing grimgor and the centaur lord that they can get attacked me, the moment it came onto my screen my game froze and then crashed. Every time I saw that army with that centaur as the lord, my game kept crashing.

Eventually I started again as it was only turn 12 and instead of astrogoth, it was zhatan that attacked me. When he attacked me it was fine and there were no crashed. However, when I defeated their army, one of the centaur heroes survived and became an agent on the map. This again made my game crash the same way it kept crashing earlier. So I believe the chaos dwarf centaur campaign model causes a crash (maybe it's trying to show an idle animation or something that fails to load I don't know).

I play with a few mods but this is the only mod that does anything to the chaos dwarves.