Sorry for the crash issue. Is there any error message after the crash? If yes, share a screenshot with us.
What is the file format and codec of the footage? Is this happening with all file formats?
Just for a test, change the renderer in project settings and check if it fixes the issue: FAQ: How to change the Video Renderer in Premiere Pro?
Have you tried clearing the old media cache? FAQ: How to clean (delete or trash) media cache files?
Still need help, MikeD? Let us know.