Apple’s iPhone 13 lineup launched Friday, and one of the key features of the 13 Pro and 13 Pro Max are their ProMotion displays with variable refresh rates that can top out at 120Hz. Be that as it may, as spotted by 9to5Mac, some app animations in third-party apps are right now just running at 60Hz. That may be disappointing in case you were hoping to see buttery-smooth animations across all of your applications with the new phones, however when we asked Apple what was happening, the organization shared two reasons why this may be happening.

One explanation is that developers should refresh their applications to proclaim that they use the higher refresh rate. This should be possible by adding an entry to the application’s plist, Apple discloses to The Verge, and the organization says it intends to share documentation about the entry you need to add soon. However, at times, animations worked with the organization’s Core Animation technology are additionally influenced by an issue that will be fixed in an upcoming software update, Apple says.

Variable refresh rate screens offer a great deal of advantages, including smoother animations and looking over when you’re using the gadget and battery savings the screen runs at lower refresh rates.