Description

Using https://github.com/davidortinau/AllTheLists app, and scrolling through collection view with Border inside we can clearly see that a good amount of time is spent in UpdateBackgroundLayerFrame which is needed to sync the sublayer with the UIView.Layer.

This has an impact on both MappingFrame and ContentView.LayoutSubviews:

Setting Frame on a background layer shouldn't take so much time.

Steps to Reproduce

No response

Link to public reproduction project repository

No response

Version with bug

8.0.90 SR9

Is this a regression from previous behavior?

No, this is something new

Last version that worked well

Unknown/Other

Affected platforms

iOS, macOS

Affected platform versions

No response

Did you find any workaround?

No response

Relevant log output

No response