Repository: flutter
Issue: [Web] Canvaskit adds noise in a high resolution image
Labels: framework,platform-web,e: web_canvaskit,has reproducible steps,P2,found in release: 2.5,found in release: 2.6,team-web,triaged-web

Flutter Web: CanvasKit

Hight quality image: 6M 1200 x 1294

How can I view high-quality images without noise?


```
import 'package:flutter/cupertino.dart';

class BigSizeImageTest extends StatefulWidget {
  const BigSizeImageTest({Key? key}) : super(key: key);

  @override
  _BigSizeImageTestState createState() => _BigSizeImageTestState();
}

class _BigSizeImageTestState extends State<BigSizeImageTest> {
  @override
  Widget build(BuildContext context) {
    return Container(
      child: LimitedBox(
        maxWidth: 600,
        maxHeight: 600,
        child: Container(
            child: Image.network(
                'https://firebasestorage.googleapis.com/v0/b/smartlabelapp-acef7.appspot.com/o/images%2FbOofcH9cNsVeNv0b2FgjPBfj0Lh1%2Fjunior-reis-LKDtUWq_92Q-unsplash.jpg?alt=media&token=4bb7201b-9eba-4c47-a38e-26a4f8560d99')),
      ),
    );
  }
}

```

[✓] Flutter (Channel master, 2.6.0-12.0.pre.171, on Mac OS X 10.15.7 19H1323 darwin-x64, locale ko-KR)
    • Flutter version 2.6.0-12.0.pre.171 at /Users/patrick386/Developer/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 18ed542e91 (5 hours ago), 2021-10-01 05:43:04 -0400
    • Engine revision 2db4319447
    • Dart version 2.15.0 (build 2.15.0-168.0.dev)

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/patrick386/Library/Android/sdk
    • Platform android-30, build-tools 30.0.3
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.10+0-b96-7281165)
    • All Android licenses accepted.

[!] Xcode - develop for iOS and macOS (Xcode 12.4)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    ! Flutter recommends a minimum Xcode version of 13.0.0.
      Download the latest version or update via the Mac App Store.
    • CocoaPods version 1.10.1

[✓] 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-b96-7281165)

[✓] VS Code (version 1.57.1)
    • VS Code at /Users/patrick386/Downloads/Visual Studio Code.app/Contents
    • Flutter extension can be installed from:
      🔨 https://marketplace.visualstudio.com/items?itemName=Dart-Code.flutter

[✓] Connected device (2 available)
    • macOS (desktop) • macos  • darwin-x64     • Mac OS X 10.15.7 19H1323 darwin-x64
    • Chrome (web)    • chrome • web-javascript • Google Chrome 94.0.4606.71

! Doctor found issues in 1 category
![스크린샷 2021-10-01 오후 11 08 02](https://user-images.githubusercontent.com/49754877/135635296-62a3674c-67a6-44ed-8342-25e0a009feef.png)
.