You could try if making a backup of and deleting "Documents\Paradox Interactive\Crusader Kings II\cache".
If it does any difference or you find out anything else that could help us get to the bottom of the problem, please consider giving us that info over here: https://forum.paradoxplaza.com/foru...3-1-0-kkad-crash-on-loading-graphics.1174637/
If it does any difference or you find out anything else that could help us get to the bottom of the problem, please consider giving us that info over here: https://forum.paradoxplaza.com/foru...3-1-0-kkad-crash-on-loading-graphics.1174637/