I did a quick search and I didn't think the other topics about crashing really seem to fit what's happening with me.
Most I read had something specific to trigger there crashes like talking to someone, my problem is different. My game seems to crash after about 10 minutes of play and has been triggered by saving or sometimes it just happens while I'm in battle, and it's not even in big battles (on native my computer can support battles of 100 people yet on this it'll crash with 20 people fighting).
P.S. I have M&B on steam so it should automatically update so I'm fairly certain I have the most recent version of M&B. Does this mod maybe run on an older version, because I've had trouble with that before.