Setting ContentView.Content = someView takes 500 ms with a non-trivial view on Windows

[MartyIX]

I have a project where we set:

contentView.Content = someVisualElement;

and this line alone takes 500 ms. Profiling seems to reveal that there are things like:

• 
• 

I have no idea why UpdateDragAndDropGestureRecognizers takes 180 ms. That's really long. The method does not seem to do much.

Do you guys have any idea how to debug it further? Or is MAUI for Windows that slow right now? Or can it be my mistake?

cc @jonathanpeppers @PureWeen

[MartyIX]

cc @dotMorten If you possibly have encountered the same issue.

[jonathanpeppers]

Are you recording these .speedscope files in Release mode? Can you attach them?

[MartyIX]

I sent it via Discord.

[jonathanpeppers]

We found @MartyIX's application might be attaching drag/drop gestures on every element. We'll check again after removing this part, just to see if there are other things to fix.