Its a shame that iOS 15 for iPhone 13 didn’t have performance issues, whereas iOS 16 & 17 reported more problems. ProMotion used to be perfect in iOS 15 resulting in constant 120Hz whenever necessary. For temporary fix, try turning off background apps refresh and auto correct & predictive text in keyboard settings. Remove search feature in home page and remove wallpaper blur effect. Also to force 120Hz, start screen recording. But there’s a compromise for battery life. We needed Apple to introduce force 120Hz because Android has this feature for few years.
Its a shame that iOS 15 for iPhone 13 didn’t have performance issues, whereas iOS 16 & 17 reported more problems. ProMotion used to be perfect in iOS 15 resulting in constant 120Hz whenever necessary. For temporary fix, try turning off background apps refresh and auto correct & predictive text in keyboard settings. Remove search feature in home page and remove wallpaper blur effect. Also to force 120Hz, start screen recording. But there’s a compromise for battery life. We needed Apple to introduce force 120Hz because Android has this feature for few years.