Patch 1.0.4

Fixed weird lag that some people experienced even though their frame-rate was good. - Monitors that run on 144Hz, 120Hz, 75Hz, 165Hz, 244Hz, ... should now feel a lot smoother. - Fixed issues with the level transitions in online co-op that were responsible for infinite loading screen, dropped connections and player units not spawning. - Fixed issue where cycling to the next and previous weapon would not always respond properly on Keyboard/Mouse. - Better performance when killing a lot of enemies simultaneous, resulting in less frame dips. Remember that turning "High Physics" off in the settings menu will also give less frame dips. - Added hint in first level for gamepad users on how to make their character turn direction (it's the Right Stick). - Added hint in a late level to prevent people from being stuck. - Fixed an occurrence that caused the game to have 2 cursors (one yellow dot and one mouse pointer). If it still happens, let us know in the forums. - AI Director now no longer spawns enemies on roofs they fall off. - AI Director now less eager to spawn a lot of simultaneous abominations (= the biggest zombies).