Hey guys I found a solution fixing freezing career mode!!! but it only works for 3.55 DEX for discless users.
Just mount the game like on 4.21 with PS3Gen (in my example NHL 13) then I run multiman click on FIFA 13 and then play the game from XMB. In XMB was FIFA 13 instead of NHL 13.
No more career problem!!! I run the game from internal hdd. I hope it helps for you guys.