A lot of people with crashes, got to play after disabling origin in the game and sync. in options.
Also you can try Outcome:
http://outcome.nofate.me/
Allows you to play just the game, without the Origin. It loads faster for sure. By the time I finish campaign, patches hopefully will be made.
I did play some MP and SP with Origin, getting just one crash so far, but I had to terminate the process about 10 times before I could get into the game becasuse of the freezes.
Sometimes the game is frozen, sometimes not. So bear in mind your fixes could just be you, lucking out.