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DCIFRTHS

macrumors 65816
Jan 25, 2008
1,308
656
I still haven't seen a video of a device that doesn't lag on iOS 9.

As soon as someone shows me iOS 9 running better than iOS 8, I will shut up and never post about this topic again.

I notice lag in Control Center too. What I am wondering is this: How does a person determine if the frame rate is 60 or 30? Is this something that people are approximating, while viewing their device, or is there a way to actually measure it?
 

Radon87000

macrumors 604
Nov 29, 2013
7,777
6,255
I notice lag in Control Center too. What I am wondering is this: How does a person determine if the frame rate is 60 or 30? Is this something that people are approximating, while viewing their device, or is there a way to actually measure it?
You can actually measure the fps to determine lag using Apple Xcode instruments
 
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Jayson A

macrumors 68030
Sep 16, 2014
2,671
1,935
Jayson, according to you, 8.4.1 lagged your iPhone 6 while using the music app and you upgraded to the iOS 9 pb3 and it solved your lag issue. https://forums.macrumors.com/threads/ios-8-4-terrible-lag.1896401/page-9#post-21707813

Lag was present in 8.4.1, even outside the music app issue you had. None of these OS iterations are immune to it in some form.

That's right, I did complain about 8.4.1 for the MUSIC.app. I guess with the redesign of Music app, Apple wanted to make it compatible with 8.4, but in doing so, maybe 8.4 wasn't designed to handle it as well as iOS 9 does. Perhaps the music app in 8.4 was just a taste of what was to come in iOS 9.

Music app no longer lags on iOS 9 the same way it did on 8.4, but now everything has a slight lag to it (except for random times when the lag seems to be gone for a minute).

Besides the new music app on 8.4, it ran like a dream. It was fast and fluid 99% of the time without a single hitch. However, the further into the distance 8.4 gets, and the more I get used to iOS 9, there may come a time where I THINK iOS 9 is smooth, but I probably forgot what smooth was actually like.

So I guess technically 8.3 was the pinnacle of the 8.x releases.
 

vertsix

macrumors 68000
Aug 12, 2015
1,870
6,143
Texas
9.1 still has these issues, and it's hilarious.

I'm pretty sure it has to do with issues with Metal, because non-Metal devices run iOS 9 really well from my experience.

Hell, I even tried the 6s this weekend, and I saw lag everywhere (CC near the top, Spotlight Search, App Switcher, etc.), which is silly because the 6s is supposed to be extremely fast (and it is, it's just the software that's so poorly optimized). The iPad Air and below run iOS 9 really well, same goes with the iPhone 5/5c.

This looks to be more of a long-term issue. If it hasn't been fixed yet, it probably will not be for a while. I guess I'll have to wait out iOS 9 until iOS 10.
 
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Radon87000

macrumors 604
Nov 29, 2013
7,777
6,255
9.1 still has these issues, and it's hilarious.

I'm pretty sure it has to do with issues with Metal, because non-Metal devices run iOS 9 really well from my experience.

Hell, I even tried the 6s this weekend, and I saw lag everywhere (CC near the top, Spotlight Search, App Switcher, etc.), which is silly because the 6s is supposed to be extremely fast (and it is, it's just the software that's so poorly optimized). The iPad Air and below run iOS 9 really well, same goes with the iPhone 5/5c.

This looks to be more of a long-term issue. If it hasn't been fixed yet, it probably will not be for a while. I guess I'll have to wait out iOS 9 until iOS 10.
Problem is by the time they fix this ****,iPhone 7 will already be out
 

Prabas

macrumors 65816
Sep 14, 2010
1,149
1,282
Europe
I fixed one of my iPad Air's problems! Scrolling in multitasking switcher is now smooth 60fps. Too bad it's jailbreak only. You'll need Switcher Speedster tweak.

Video:


You'll see minor-ish stuttering when leaving/entering an app.
 
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Merkie

macrumors 68020
Oct 23, 2008
2,123
738
9.1 still has these issues, and it's hilarious.

I'm pretty sure it has to do with issues with Metal, because non-Metal devices run iOS 9 really well from my experience.

Hell, I even tried the 6s this weekend, and I saw lag everywhere (CC near the top, Spotlight Search, App Switcher, etc.), which is silly because the 6s is supposed to be extremely fast (and it is, it's just the software that's so poorly optimized). The iPad Air and below run iOS 9 really well, same goes with the iPhone 5/5c.

This looks to be more of a long-term issue. If it hasn't been fixed yet, it probably will not be for a while. I guess I'll have to wait out iOS 9 until iOS 10.

I recorded this video. I didn't clarify which phone is the 5 and which one the 5s on purpose, but it should be apparent.

The stutter we're all complaining about is similar to this: a lot of frames are simply dropped for no reason. The old A6 outperforms the A7 and above on many occassions. The control center example is used because it's the easiest and quickest way to reproduce the issue, but frame drops like this occur all the time on different places on iOS 9.
 
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dba415

macrumors 6502a
Jun 18, 2011
905
1,078
9.0 was terrible on my 5S. Every time I hit the home button the screen would lag for a second before I could swipe right/left. 9.1 has been better (no more home screen lag) but I still have issues with Siri especially. Sometimes I would hold down the home screen while my phone was locked trying to open Siri but the phone would unlock my device instead.
 

Cakefish

macrumors 6502a
Oct 14, 2015
512
308
9.1 on my brother's iPhone 5S is super smooth. On his Air it's a different story.

On my Air 2 it's mostly OK now since the update but the Music app is still problematic as well as Google Photos app.
 
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duffman9000

macrumors 68020
Sep 7, 2003
2,331
8,089
Deep in the Depths of CA
You can't compare a desktop OS with a mobile OS in terms of RAM needs, though.

Why not? Apple opened the door to comparisons when it said the A7 had a 64bit desktop class architecture. 1GB on an iPad Air has already been proven to be on the edge of bad multitasking performance. This of course was "fixed" in the Air 2. While we don't need 8GB in a mobile OS, 1GB has been proven to be barely enough on an iPad Air.

On the Air 2, these issues magically just go away.
 
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Zaft

macrumors 601
Jun 16, 2009
4,570
4,049
Brooklyn, NY
So I was at the Att store today to play around with the 6S. Is it fast? Yes. Is it smooth? For the most part yes.

Here is the kicker, I played around with the 6 they had on 8.4. Guess what? Its faster and smoother then a 6S on IOS 9.

Are you kidding me? I have no idea what apple is doing but they are going backwards right now.
 

iphonedude2008

macrumors 65816
Nov 7, 2009
1,134
450
Irvine, CA
So I was at the Att store today to play around with the 6S. Is it fast? Yes. Is it smooth? For the most part yes.

Here is the kicker, I played around with the 6 they had on 8.4. Guess what? Its faster and smoother then a 6S on IOS 9.

Are you kidding me? I have no idea what apple is doing but they are going backwards right now.

There are too many differences in setup to actually determine real world performance. The 6S is definitely faster than the 6, but the setup and current processes may impact comparisons.
 

Jayson A

macrumors 68030
Sep 16, 2014
2,671
1,935
So I was at the Att store today to play around with the 6S. Is it fast? Yes. Is it smooth? For the most part yes.

Here is the kicker, I played around with the 6 they had on 8.4. Guess what? Its faster and smoother then a 6S on IOS 9.

Are you kidding me? I have no idea what apple is doing but they are going backwards right now.

If we never update our devices, they'd stay fast forever! Part of the biggest issue is Apple slowing down older devices and once you upgrade, there's no going back.
 

I7guy

macrumors Nehalem
Nov 30, 2013
35,158
25,268
Gotta be in it to win it
So I was at the Att store today to play around with the 6S. Is it fast? Yes. Is it smooth? For the most part yes.

Here is the kicker, I played around with the 6 they had on 8.4. Guess what? Its faster and smoother then a 6S on IOS 9.

Are you kidding me? I have no idea what apple is doing but they are going backwards right now.
It might be "smoother" but the 6 is not faster. I did find some micro-stutters here and there, but the 6s will demolish the 6 on virtually any activity; not limited to web browsing and movie editing and more.
 
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