After the most recent windows update, I had two back to back crashes of this nature within maybe 30 seconds of logging in.

The severity was bad enough that the GPU basically turned off then wouldn't turn back on, forcing me to forcibly shut down the PC. The second shutdown actually ended up causing some severe file corruption that forced me to reinstall Windows entirely, and while the game seems to now be running better then ever, they seriously need to work out whatever hiccups in the DX11 client that are causing this, since I really shouldn't be having to worry every single time I see the "Update and shut down" option show up.