[Interest] [Qt iOS - QTBUG-101568] Application takes several seconds to become responsive depending on the number of items in scene

Nuno Santos nuno.santos at imaginando.pt
Tue Apr 12 13:40:22 CEST 2022


Thanks for your reply.

While many apps are just text, some images, and are divide in several pages, our apps have hundreds of controls in the front page. Using loaders is also not always an options as loaders can take too much time to load depending on its contents, which is also not pleasant for UX. 

I don’t have a easy way of telling how many items are in the image below, but it should be several thousands of items loaded at startup, but one thing I’m sure, it is not a problem in windows, osx and android.



> On 12 Apr 2022, at 12:28, ekke <ekke at ekkes-corner.org> wrote:
> I noticed that since some time iOS apps are really slow in debug mode (not only at startup), but run fast in release mode (with compiler on)
> (5.15.7 - will use 5.15.9 soon)
> BTW: I never have situations where per ex at start-of-app a repeater creates many objects, normaly first page the user will see is a LoginPage or a HomePage with less objects
> follow-up Pages are loaded most times using Loader
> ekke
> Am 12.04.22 um 13:07 schrieb Nuno Santos:
>> Hi,
>> I have a problem were all my apps take several seconds to become responsive. The more complex the app is, the more time it takes to get responsive to touch. This didn’t used to be this way.
>> I can easily demonstrate the issue happening with a simple example, which does not happen in Windows or Android, only iOS:
>> https://bugreports.qt.io/browse/QTBUG-101568 <https://bugreports.qt.io/browse/QTBUG-101568>
>> Is anyone else having this issue?
>> I think this issue is particular severe for anyone who has complex applications on iOS.
>> Looking forward to hear the community thoughts about it.
>> Best,
>> Nuno
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