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Gesture Animation is not 120hz and feels laggy on ProMotion iPhone 13 #101653

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flutter/engine
#35592
@eric8810

Description

@eric8810

Details

with #90675
the interface refresh rate should be fixed to 120hz on Iphone 13 promotion screen.
the problem is , if you drag list or screen with fingers, the ui is definitly running at 60hz.

1. how to reproduce

see difference between drag list view slowly VS drag & release list view fast

2. demo repo

https://github.com/eric8810/gesture-animation-demo

list drag video:
https://drive.google.com/file/d/1LGwoQUQ2PmlIfS41W5kvE-bYT6SNoWyX/view?usp=sharing

navigation drag video:
https://drive.google.com/file/d/1rp-exZ0RGs34A9q26rGAE2W9yzoLZ3Q9/view?usp=sharing

**Target Platform: iOS
**Target OS version/browser: 15.4.1
**Devices: iPhone 13 Pro Max

Traceing file

Timeline tracing file:

dart-timeline-2022-4-14.json.zip

Logs

[✓] Flutter (Channel master, 2.13.0-0.0.pre.438, on macOS 12.3.1 21E258 darwin-arm, locale zh-Hans-CN)
    • Flutter version 2.13.0-0.0.pre.438 at /Users/eric8810/code/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision e3f8b50fd5 (2 days ago), 2022-04-07 20:51:07 -0400
    • Engine revision 816e3d3012
    • Dart version 2.17.0 (build 2.17.0-266.0.dev)
    • DevTools version 2.12.1

[✓] Android toolchain - develop for Android devices (Android SDK version 32.1.0-rc1)
    • Android SDK at /Users/eric8810/Library/Android/sdk
    • Platform android-32, build-tools 32.1.0-rc1
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.11+0-b60-7772763)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 13.3)
    • 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 2021.1)
    • 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 11.0.11+0-b60-7772763)

[✓] VS Code (version 1.67.0-insider)
    • VS Code at /Applications/Visual Studio Code - Insiders.app/Contents
    • Flutter extension version 3.39.20220405

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-arm64   • macOS 12.3.1 21E258 darwin-arm
    • Chrome (web)    • chrome • web-javascript • Google Chrome 100.0.4896.75

[✓] HTTP Host Availability
    • All required HTTP hosts are available

• No issues found!

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P1High-priority issues at the top of the work listc: performanceRelates to speed or footprint issues (see "perf:" labels)e: device-specificOnly manifests on certain devicesengineflutter/engine repository. See also e: labels.platform-iosiOS applications specifically

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