CollectionView Scroll Performance

[richaplinvs]

Description

The scroll performance in .NET MAUI’s CollectionView is significantly worse compared to ListView in Xamarin.Forms. This issue becomes more noticeable as the complexity of the DataTemplate increases. In our scenario, we are experiencing severe lag when using CollectionView in a real-world app where the DataTemplate includes multiple elements.

Steps to Reproduce

Run the reproduction project on the simulators , load the list page and scroll up and down. Scrolling in CollectionView is noticeably laggy, with stutters. The issue becomes more pronounced as the complexity of the DataTemplate increases.

Link to public reproduction project repository

https://github.com/richaplinvs/reproduction-projects/tree/main/maui/CollectionViewPerformance

Version with bug

9.0.0 GA

Is this a regression from previous behavior?

Yes, this used to work in Xamarin.Forms

Last version that worked well

Unknown/Other

Affected platforms

iOS, Android

Affected platform versions

android35.0, ios18.0

Did you find any workaround?

The only workaround we’ve identified is reducing the content or complexity of the DataTemplate. However, this is not a feasible solution for our application, as it significantly limits the functionality already offered to the user.

Relevant log output

[similar-issues-ai]

We've found some similar issues:

• [WinUI] CollectionVIew scrolling performance #18510 , similarity score: 84%
• Collection View Scrolling Not Smooth on iOS 18 (Version 8.0.92), While Versions 8.0.40 and iOS 17 Perform Smoothly #25369 , similarity score: 83%
• [Android] CollectionViewwith multiple bindable layouts (CardWithComplexContent) performance issues #21580 , similarity score: 82%
• [iOS/Catalyst] CollectionView scrolling performance when height is not constrained drops drastically. #18696 , similarity score: 82%
• CollectionView is positioned incorrectly and the scrolling is broken #6784 , similarity score: 82%
• Slow Collectionview Rendering performance in Maui compared to Xamarin #24224 , similarity score: 82%
• [Android] CollectionVIew scrolling performance on MAUI lags compared to XF #18505 , similarity score: 82%
• Horrible performance/memory usage with CollectionView depending on size on screen #12013 , similarity score: 82%
• CollectionView is Very Laggy #20433 , similarity score: 82%
• Slow Scrolling Performance in CollectionView or ScrollView #17326 , similarity score: 82%

If any of the above are duplicates, please consider closing this issue out and adding additional context in the original issue.

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[Ying-6]

This issue has been verified Visual Studio 17.13 Preview 2.1 (9.0.30 & 9.0.0 & 9.0.0-rc.2.24503.2). Can repro this issue on Android & iOS platform.