After updating to ios 17.2 and later to 17.5.1 via iTunes on a Windows PC, I encounter system freezes, statters when opening, switching and closing applications. In general, the performance of the system makes much to be desired. Some third-party apps are also slowing down, and some generally work better than iOS itself. In addition, the battery life upsets me greatly, since the update to iOS 17 at the end of 2023, I can no longer get more than 10-11 hours of SoT, as it was on iOS 16, I am limited to 8-9 hours of SoT, despite the fact that the performance of my battery has not changed much. I'm starting to think that Apple deliberately messed up my device so that I could buy a new one, because, again, I never had problems with battery life and performance when I bought it in mid-2023. It all started right after I upgraded to iOS 17 at the end of 2023 and restoring via iTunes did not help solve this problem in any way.