New patch : can't join a game (PC)

Hello,

I've been playing without any problem for over 45 hours since the Origin access (PC) and you just released a patch. Since then, there is no way I can join a multiplayer game.

I can play arcade or campain without any problem but when I join a server on multiplayer, it just drives me back to the menu after the "start as X after X seconds" hits 0. When I'm supposed to spawn, I'm just driven back to the menu (or even to the desktop).

I have an AMD and didn't find any similar problem, please help..