flutter frames drop when relaunch from background with IOS(specially beyond the iphoneX series device) #96381
Description
while i relaunch from background my app will frames drop in few second even though under the release mode , this situation is obiviously show in IOS(specially beyond the iphoneX series device，and my device is iphone12)，when i download the Application from App Store also has this problem。
flutter doctor -v
➜ ~ flutter doctor -v
[✓] Flutter (Channel stable, 2.8.1, on macOS 12.1 21C52 darwin-arm, locale
zh-Hans-CN)
• Flutter version 2.8.1 at /Users/jacob/Downloads/flutter2.8.1
• Upstream repository https://github.com/flutter/flutter.git
• Framework revision 77d935af4d (4 weeks ago), 2021-12-16 08:37:33 -0800
• Engine revision 890a5fca2e
• Dart version 2.15.1
• Pub download mirror https://pub.flutter-io.cn
• Flutter download mirror https://storage.flutter-io.cn
[✓] Android toolchain - develop for Android devices (Android SDK version 31.0.0)
• Android SDK at /Users/jacob/Library/Android/sdk
• Platform android-31, build-tools 31.0.0
• Java binary at: /Applications/Android
Studio.app/Contents/jre/Contents/Home/bin/java
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
• All Android licenses accepted.
[✓] Xcode - develop for iOS and macOS (Xcode 13.2.1)
• Xcode at /Applications/Xcode.app/Contents/Developer
• CocoaPods version 1.11.2
[✓] Chrome - develop for the web
• Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome
[✓] Android Studio (version 2020.3)
• Android Studio at /Applications/Android Studio.app/Contents
• Flutter plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
🔨 https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7249189)
[✓] VS Code (version 1.63.2)
• VS Code at /Applications/Visual Studio Code.app/Contents
• Flutter extension version 3.32.0