Batman: Arkham Knight - PC Update November 24th Changelog:

Fixed a hitch during some game saves
Fixed a Windows 10 issue causing the game to be unresponsive on launch when the keyboard language was set to Japanese, Japanese Microsoft IME, Korean, Chinese (Traditional) or Chinese (Simplified)
Fixed minor delay when aiming a gadget when playing with a keyboard and mouse
Fixed a bug causing full screen movies to play at half the monitor’s refresh rate on some systems
Fixed players sometimes not being able to counter the Mini-Gun Brute after being spotted when playing as Nightwing or Batman
Fixed a performance drop that occurred when encountering Man-Bat for the first time
Fixed some Multi-Monitor specific bugs
Some improvements to mouse and keyboard bindings
Improved VRAM management to reduce framerate hitches
Stability improvements for rare crash issues
Fixed an issue causing certain types of lights & shadows to render incorrectly
Fixed an issue causing the game process to occasionally remain running in the background for a period of time
Fixed the Knightfall Protocol not being able to activate under certain conditions
Fixed a progression blocker that could occur in Stagg Airships when leaving the predator room after only knocking out one of the guards
Fixed damage states for Batman’s V8.03 skin in Story Mode after selecting an alternate skin for AR Challenges
Fixed missing rain effects on several Batman skins (fix for 1970s and Arkham Origins skins coming soon)
Added support for new DLC releasing on November 24th
Play as other characters in AR predator challenges