Like the title says, I finished the camnpaign no problem, then went for the extra chapters and left mid chapter but after launching the game today it just crashes... no error code or anything.. already tried restarting my pc and uninstalling the game but it's the same.

Also nothing in the Windows error log?

I think this is one of the games that doesn't like CPUs with more than 4 cores.

I personally never had a problem, but it's worth a try.
https://superuser.com/questions/309617/how-to-limit-a-process-to-a-single-cpu-core