ScrollView scrolls twice as slow as ScrollViewer

[Poker-sang]

Describe the bug

My users complained to me about the slow scrolling of ScrollView, then I tested it and found that ScrollView scrolls twice as slow as ScrollViewer.

Here are the results of my test mouse scrolling once:

ScrollView (48px)

ScrollViewer (97px)

Comparing the scrolling speeds of most common software, I think ScrollViewer's is more reasonable.

Steps to reproduce the bug

<ScrollView>
    <ItemsRepeater />
</ScrollView>

<ScrollViewer>
    <ItemsRepeater />
</ScrollViewer>

You can use https://github.com/Poker-sang/JustifiedLayout to use the finished product directly

Expected behavior

I'd like to speed up ScrollView's scrolling speed.

Of course it would be better to expose the dependency property to let me control the speed myself.

Screenshots

No response

NuGet package version

WinUI 3 - Windows App SDK 1.6.5: 1.6.250205002

Windows version

Windows 11 (24H2): Build 26100

Additional context

No response

[github-actions]

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• ScrollView and ScrollViewer have different scroll speeds (#9368), similarity score: 0.87

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[zhuxinghan]

The larger the display scale is, the slower it scrolls. It seems that the scroll amount doesn't count for dpi scale.