The DateInput rendering performance worsened in version 4.6.0 and the component renders more slowly. This is easily visible when there are multiple DateInputs on the page:

4.5.0: https://blazorrepl.telerik.com/mdPFuXFI02i7Ulbo52

4.6.0: https://blazorrepl.telerik.com/GdlbEXPe00IhfKWN29

When you check and uncheck the checkbox, the DateInputs appear more slowly with version 4.6.0.

There is also a Grid, which is commented out. If you show it, the virtual scrolling will exhibit a temporary freeze before rendering of the new rows - the user sees the loading skeletons for a second even after they have stopped scrolling.