Can't change the resolution or go full screen.
Can't use S.A.M. to get achievements.
Doesn't drop any Steam items after 2 hours.
Game won't start properly due to error -400 and the game takes minutes to close when not terminated from the Task Manager.

Can't change the resolution or go full screen. Can't use S.A.M. to get achievements. Doesn't drop any Steam items after 2 hours. Game won't start properly due to error -400 and the game takes minutes to close when not terminated from the Task Manager.