The problem is not iOS 7, the problem is that you have iOS 7 on an iPhone 4.
On iphone 4 in music app, I have like 140 songs and in "songs" tab, when I scroll through songs, it laggs, like an android. I mean the scroll animation isn't fluid. Is anybody here with an iphone 4 having this problem? And I did a fresh restore to beta 4.
Let's put it this way. The iPhone 4 is like what 3 years old? The hardware is out of date. When iOS 6 came out the iPhone 4 was very sluggish, at least when I had it. It's your phone not the iOS. The more updates the iPhone 4 gets, the more it'll lag. Just imagine if iOS 7 was on the iPhone 3GS.
If anything, the 3GS would probably run it faster because its chip is only a tiny bit slower than the 4's, but it's not having to deal with a Retina display. The 4 has always been jerkier than the 3GS.
Anyway, I'm not trying to undermine your point. I agree that the 4's hardware is the problem in this case. It's just not powerful enough to handle all the fancy graphics of iOS 7.
For god's sake, it's just scrolling, if this is intense graphics...
So you are thinking (and almost 100% believe) I guess that this would be the intended behaviour when Gm comes out .. correct ? 😎
Exactly, finally someone understands.