Ubisoft's Assassin's Creed IV will only output a native 1080p picture on PS4 once users have downloaded a patch.
The required title update will apparently roll out shortly after release”. Without the patch the game outputs at 900p.
But why ship at 900p in the first place?” the Ubiblog reads. To meet an essential goal: deliver a visually brilliant game at a steady 30 frames per second (the industry gold standard for open-world games).
Finishing the game at 900p gave the development team the extra room in terms of the GPU and CPU usage to ensure the framerate never dips below 30 frames per second. The team then used the time between the ship date and the release to focus on a title update that could deliver native 1080p resolution on the PS4.
It is not yet confirmed what resolution the Xbox One version will run at, although it is believed to be 900p.
Activision's Call of Duty: Ghosts also requires a patch to get up to 1080p on PS4. Without it the game runs at 720p.
"There was a configuration issue in the retail version on single player mode only," Activision told Joystiq. "This has been addressed with a day one software update. People will be able to download the day one update when PlayStation 4 launches in their territory and play at native 1080p."