**Describe the bug** ItemsRepeater have poor performance when it contains nested items repeaters. https://user-images.githubusercontent.com/5128766/198218585-117b17b7-a28c-43b4-8a86-bb36b57ec1a3.mp4 There are also performance issues on large **plain** lists with emoji. https://user-images.githubusercontent.com/5128766/198219612-da0b46f1-b9a9-4839-b11e-dec04252881e.mp4 These videos are recorded in Release configuration (`dotnet run -c Release`). Here is my workstation configuration: <img width="262" alt="image" src="https://user-images.githubusercontent.com/5128766/198220890-106c77e8-fa14-4615-8e20-4a0e0abcd2e9.png"> **To Reproduce** [demo.zip](https://github.com/AvaloniaUI/Avalonia/files/9876806/demo.zip) **Desktop (please complete the following information):** - OS: MacOS 12.6 - Version 11.0.0-preview2
Describe the bug
ItemsRepeater have poor performance when it contains nested items repeaters.
video.mp4
There are also performance issues on large plain lists with emoji.
video2.mp4
These videos are recorded in Release configuration (
dotnet run -c Release).Here is my workstation configuration:
To Reproduce
demo.zip
Desktop (please complete the following information):