Sony Restrictions May Prevent PS5 From Playing Legacy PS4 Games At 120FPS
Last week, Eurogamer’s Wesley Yin-Poole reported that Infinity Ward “quietly updated Call of Duty: Warzone to run at 120fps on Xbox Series X, but not on PS5.” Call of Duty: Warzone appears as a PS4 app when downloaded on the PS5 and does not start in 120fps mode, nor can it be enabled. When questioned, Activision did not comment, but Yin-Poole assumed it was because of Sony's handling of backward compatibility. He further speculated that a full game port would be needed to enable 120fps on a game, which seems to be the case with new evidence.

In the end, it is likely we will see very few PS4 games running at 120fps on the PS5 even though it should be entirely possible. Microsoft has the right idea and put specific tools into developers' hands as soon as possible, whereas certain features are locked to the PS5 for unknown reasons. It is now up to Sony to see if this can be changed so PS4 games can utilize the hardware in the PS5 to its fullest.