Warner Bros. Interactive Entertainment reportedly was aware of problems for the PC version of Batman: Arkham Knight for months, and chose to focus more on the console versions of the game.
The final game that was released proved to be an ugly port to PC gamers, and it not surprisingly was pulled. Rocksteady Studios didn't even bother working on the PC version of Batman: Arkham Knight, and outsourced it to Iron Galaxy Studios.
"I will say that it's pretty rich for WB to act like they had no idea the game was in such a horrible state," an unnamed tester told Kotaku. "It's been like this for months and all the problems we see now were the exact same, unchanged, almost a year ago."
NVIDIA and others are helping Warner Bros. try to sort out the problems sooner rather than later - but there is no timeline as to when PC gamers will get to enjoy a better version of the game.