Game crashes

Game crashes every time i click on the first mission and many certain missions.
What to do?
my platform is PC ( Steam ).

Have you tried to apply advises gathered here?


Bro im done with your game seriously!
2 days ago DLC re-downloaded again and took my 4 days to launch the game!
Now the game crashes and i started to download again ( 12 GB ) and i have to wait for at least 15 hours to download this !!!