I don't have many words to praise iOS 7, due to the numerous operational problems, but I have to admit that iOS beta 7 3 is the fastest version of iOS 7 released so far. This is visible even from the first unlocking of the terminals they have installed iOS beta 7 3, those from Apple modifying the speed with which the animations are run in the operating system, but probably choosing to close some resource consumers as well. I could say that iOS beta 7 3 it is as fast as iOS 6.x and I don't think I would be wrong, although the first beta version of iOS 7 worked harder on iPhone 5 than iOS 6.1.2 on iPhone 4S.
I noticed in the comments left by you that you had the same pleasant surprise after installing iOS 7 beta 3, especially on iPhone 4 or iPad 2, and I am sure that this joy will be forgotten in the final version of the operating system. No matter how well iOS 7 works now, in the final version things will be completely different because more resource-consuming daemons will be included and of course Apple will reduce the performance of old terminals to "encourage" users to buy a new terminal.
