Windows 7 (64)
i7-3770
32GB RAM
Radeon R9 280
This patch pretty much broke the game for me. The log in screen and game vibrates up and down randomly very fast. Sometimes, even though the res is set to 2560x1440 it looks like it is displaying at 800x600. Also my second monitor is now black, where it used to display desktop and any apps running. I've tried rebooting, disabling all other processes and it still won't behave. All drivers up to date.
Was running fine last night.