My Whocrashed report told me that the latest Nvidia driver is the cause of this. i never had any trouble during server slam or on early access launch. If there is any BLUE please just help us let the devs know. i had to hard reset my computer everytime after closing d4.
Pls refer to this reddit link , alot of people have reported the same issue.
https://www.reddit.com/r/diablo4/comments/11xcujl/pc_freeze_after_closing_d4_client/