Performance Degradation When Panning or Zooming Stage with not so Many Items Selected

[yevgenili]

The performance issue is noticeable when there are 400 simple rectangles and they are selected - transformer is working.

When doing pan or zoom, stage x and y are changing and because of it all children of stage gets updated.

video:
https://github.com/user-attachments/assets/774bb92a-1587-4b7e-a515-a66c13e41457

performance tab shows it doing many transformer.update() because of _clearSelfAndDesendent:

i have a minimal working example with only plain konva(no react or other dependencies):
https://codesandbox.io/p/sandbox/cnshg3?file=%2Fsrc%2Fmain.ts%3A71%2C7-71%2C24

[lavrton]

I am not sure yet what may be the solution to this. The working workaround is to put all selected nodes into a group.

[yevgenili]

yes, but we should know that grouping will adjust their group z-index relative to other elements. While selected, the group may temporarily receive a higher z-index to ensure they appear on top, reverting once they're deselected