sorry you're having these problems with XD.
would it be possible for you to share your file that crashes when exporting artboards, so we can look what is causing it? You can email me at email@example.com
I'm having the same issue. Started after I upgraded to the latest XD for Windows 10.
I received your files, thank you!
I fixed the problem by uninstalling XD (with removing preferences) and reinstalling using the Adobe CC app manager.