Game freezing at the end of a dungeon

Played a game with another player, we entered the Den of the Fallen, played all the way till we reached the stone that gets you back to the entrance of the dungeon (forgot the name and I'm at work right now, sorry. You all know what I mean), he clicked it and continued playing, I clicked it and my game totally froze, I heard the same sound sequence, like half a second, repeating constantly.

I waited for more than 60 seconds, as I thought it's the assets loading bug, but it just stayed that way.