Environment Didn't Fully Load

Summary
-Part of the environment did not load while walking around; could not exit game to reload area.

Description
I was right at the start of Old Tristram Road. The game had been slightly stuttery for several minutes, seemingly still loading assets. I came up to an area where a large chunk of the environment hadn't loaded. I tried backtracking a bit to see if that would reload the bit, but no luck. I then tried to exit to the main menu, but both the exit to menu and exit to desktop buttons were unresponsive. The other buttons, such as achievements and graphics options, worked fine. I had to alt+f4 to quit. I loaded up the toon again to see if the chunk was still missing, but it seemed to be working fine at this point -- the slight stuttering went away fast too, within a couple minutes. This was the first time that I've encountered the area loading problem, of several hours gameplay.

Screenshot & DxDiag
http://dl.dropbox.com/u/22691489/D3/Screenshot000.jpg
http://dl.dropbox.com/u/22691489/D3/DxDiag.txt