Hope that will be a first step.
this post describe a similar problem and proposes some direction:
Because dragImage is the old (and likely soon to be deprecated), single image
style drag setup and the pasteboardWriter version is the modern multi-image
drag set up. Ever notice how when you drag a file around in the Finder the
drag image will morph as the drag moves between windows with different view
styles etc? Or how the drag images change positions relative to the mouse as
you drag multiple files around. That is the multi-image drag setup. Single
image drags can’t do that.
Tell if you succeeded at the end.
Thanks for taking time to answer that!
I see. We actually did not like the default animation while dragging, it does looks nice but will negatively impacts the performance when dragging a lot of items (1000+ or so)
We will see what we can do if the APIs are not supported.
Thanks again for the help!
Wish you good.
Don't forget to report when it works and then close the thread.