Every, and I mean every time I am doing bounties and bring up the map to go to desolate sands. I teleport and the loading screen pops up, the little red things start to do their left to right dance and it freezes. If you hit keys it sounds like the game may still be doing something just no video. And you can't get it to unlock short of closing the game with task manager. I think I've only successfully done act 2 bounties once since patch.
It's pretty much happening for AMD users... I've only had black screening happening on Desolate sands and those rift-exclusive westmarch sewers like place thing. I only dare to visit those places when i do LAN with my friend cause i can navigate through my friend's screen.