Nobody is trying to cover anything up. Legitimate issues and replies are discussed without moderation.
I can’t replicate the “constant barrage of glitches and stutters”. Must be the settings I have configured.
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iPhone XS iPhone XS - momentary stuttering after inactivity
- Thread starter justinhill
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I can’t replicate the “constant barrage of glitches and stutters”. Must be the settings I have configured.
I have two iphones 5s, one 6s, one 7, one 8 and one xs. All of them are being used on a daily basis for my needs. I am an iphone user since the first iphone was released and I know this smartphone like the back of my hand.
Regardless of any settings, the stutter is there. Even when the phone is restored as new. ONLY on iphone xs.
Check the videos shot in slow motion on the FB page, they speak for themselves.
Don’t do Facebook. But for me if a slow motion video is needed to see the issue, I wouldn’t care. My phone is the max.
I shot the videos to emphasize the issue and to show that there are a lot of frame drops in animations. For me it is also obvious without slow motion. I’ve noticed it in the first week of ownership and so have the others here and on the Apple forum discussion.
https://discussions.apple.com/thread/8565789?answerId=250131662022&page=1
Hate to say it but i was just thinking the same. If 3 months after the launch , all kind of small refinements are getting prioritized over this , its just obvious that our issue is not in their list. Not even being recognized. The sad thing is that iOS 13 will apear at the end of octomber and we .. we will be stuck until then with our “glorious” , “top performing” , “snappy” over 1k $ devices.
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@Coffee_Time , well , given that fact that nobody has all the necessary proofs whether this is hardware fault or not , please abstain yourself from such kind of statements , and don't steal our hope 
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I advise everyone in this threads sends apple a feedback on this issue today and link this thread. I just did it now and I did it before I hope it hopefully helps this time.
Link to leaving feedback
https://www.apple.com/feedback/iphone.html
Link to other thread complaining about this same issue on apple's discussion board
https://discussions.apple.com/thread/8565789?answerId=250131662022&page=33
[doublepost=1548338875][/doublepost]Other Threads complaining about the issue that you can use as reference for feedback
https://discussions.apple.com/thread/8565789?answerId=250131662022&page=33
https://discussions.apple.com/thread/8565789
https://discussions.apple.com/thread/8611828
https://discussions.apple.com/thread/8600577
https://www.reddit.com/r/apple/comments/9jfhl4/iphone_xs_slight_lag_or_drop_in_frame_rate/
Link to leaving feedback
https://www.apple.com/feedback/iphone.html
Link to other thread complaining about this same issue on apple's discussion board
https://discussions.apple.com/thread/8565789?answerId=250131662022&page=33
[doublepost=1548338875][/doublepost]Other Threads complaining about the issue that you can use as reference for feedback
https://discussions.apple.com/thread/8565789?answerId=250131662022&page=33
https://discussions.apple.com/thread/8565789
https://discussions.apple.com/thread/8611828
https://discussions.apple.com/thread/8600577
https://www.reddit.com/r/apple/comments/9jfhl4/iphone_xs_slight_lag_or_drop_in_frame_rate/
The first beta of iOS 12.2 has just been released for dev.
Can someone check if the stutters issues are solved ?
If this is not the case, I think we can consider :
- that the issue will never been fixed
- that the issue is hardware and cannot be fixed
Can someone check if the stutters issues are solved ?
If this is not the case, I think we can consider :
- that the issue will never been fixed
- that the issue is hardware and cannot be fixed
I genuinely cannot believe this still hasn't been addressed by Apple. We have an app that's been on hold for launch for months because this issue severely kills performance on XS models.
We have bug reports filed and DTS cases with Apple where they have acknowledged this is a bug that needs fixing but no timeline or apparent effort to actually resolve it.
Below is a video of the test case we sent to Apple back in October.
This video demonstrates one of the most basic UIKit operations running on an iPhone XS. It uses < 1% CPU and nigh on nothing else. (It should not stutter!)
For developers: This is simply a CADisplayLink with a target FPS of 60.0 adjusting the frame of a series of opaque UIViews by a fixed value every update. Frame drops are not registered when profiling with Instruments but they are clearly visible and reproducible.
This only happens when using CADisplayLink, when using Spritekit animations are smooth.
CADisplayLink is the foundation for UIScrollViews, UITableViews and most other basic iPhone operations, this is why users are seeing problems with scrolling in apps and video playback stutters among other things.
We've tested each iPhone down to iPhone 4 with this code and they run smoothly with no stuttering. So what's going on inside the XS?
Why isn't this getting more coverage? Our game has been frozen as a result of this and I've seen many examples of games already live on the store that are affected by this. (Basically any game that relies on CADisplayLink for its updates).
What frustrates me most is support for these issues is being directed at App Developers and not Apple, see attached Spotify image. There is not much Spotify can do about this as the problem is baked into the fundamentals of what Apple allow a developer to access.
Without trying to sound overdramatic or alarmist, this really is disastrous from Apple.
We have bug reports filed and DTS cases with Apple where they have acknowledged this is a bug that needs fixing but no timeline or apparent effort to actually resolve it.
Below is a video of the test case we sent to Apple back in October.
This video demonstrates one of the most basic UIKit operations running on an iPhone XS. It uses < 1% CPU and nigh on nothing else. (It should not stutter!)
For developers: This is simply a CADisplayLink with a target FPS of 60.0 adjusting the frame of a series of opaque UIViews by a fixed value every update. Frame drops are not registered when profiling with Instruments but they are clearly visible and reproducible.
This only happens when using CADisplayLink, when using Spritekit animations are smooth.
CADisplayLink is the foundation for UIScrollViews, UITableViews and most other basic iPhone operations, this is why users are seeing problems with scrolling in apps and video playback stutters among other things.
We've tested each iPhone down to iPhone 4 with this code and they run smoothly with no stuttering. So what's going on inside the XS?
Why isn't this getting more coverage? Our game has been frozen as a result of this and I've seen many examples of games already live on the store that are affected by this. (Basically any game that relies on CADisplayLink for its updates).
What frustrates me most is support for these issues is being directed at App Developers and not Apple, see attached Spotify image. There is not much Spotify can do about this as the problem is baked into the fundamentals of what Apple allow a developer to access.
Without trying to sound overdramatic or alarmist, this really is disastrous from Apple.
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So...you're delaying the release of your app because a top-tier model drops a few frames every now and then? I'm sorry but that sounds like a terrible business decision and all I see is lost revenue.
Casual users don't care about this. Apparently, neither does Apple.
Sidenote: the Spotify issue doesn't annoy me, it looks like the view locks into place. It's a stutter, no doubt, but it's not going to affect music playback.
I totally agree with you.
Why isn't this getting more coverage? This is so noticeable.
This is a real disaster.
There are games not being released because this bug affects some games more than others depending on their architecture, its not simply a case of "drops a few frames every now and then".
This bug renders our game unplayable, it relies on frame-accurate racing and frame-accurate timed-jumps. This and many other games have been catastrophically impacted by this bug. We've been in the app business for 8 years and not seen anything like it, this sadly is the right decision.
We care more about user experience than a quick buck. Unlike some larger companies, apparently.
You mention that your game runs smooth using SpriteKit, why not use that framework instead of relying on CADisplayLink? (honest question, not sarcasm)
Even with this issue, personally I would still release the app because the number of users on other devices outweighs the minority with top-tier Xs/Xs Max (especially with record low sales being reported by Apple). You might get a few negative reviews but overall the experience will be positive on everything else. Then if/when Apple fix the bug you already have put your app out there and made money.
I understand the user experience is important but paying developers is more important imo.
100% sure your phone stutters too, every XS out there stutters. I've replicated the stutter on many multiple XS and XS Maxs that I've tested (friend's phones, at Apple store, at cell carrier store).
You may not have the visually acuity to see it (not at all an insult, my vision is tested at better than 20/20), but two friends and two Apple workers all said they never saw a stutter on their phone, but once I showed them using their own phones, they all agreed it was there.
I myself noticed it in the first 30 seconds of playing with my phone. I wasn't looking for it mind you, as I didn't even know of the issue beforehand. I only went on these forums to try and understand if my phone was defective.
Playing with the X or even my old iphone 6(!) and seeing those phones being way more fluid is a huge annoyance for me, I see it every time I use the phone.
Hello, try this ... You have to deactivate Force Touch and then force a reboot ... The difference that I notice is very big. Try and comment please ...
Not seeing it and not caring about it are two different things. If there were stutter, which there is from time to time I would see it and do notice it. It doesn't annoy me however.
I've had a couple hours of trial time and damn this really helps make the phone smoother!!
People you have to try this out. Line6 great find!
This won't totally stop the throttling issue but my phone is definitely way more butter smooth there's no doubt.
Too bad we have to shut off a nice feature (albeit not absolutely necessary as even the XR doesn't have it) to get it to where it should be. Maybe this info could help Apple hone in on the issue.