Best practice for redraw a dragged window

We have implemeted now support in !CLFiler a viewer to display images.
But when moving the viewer window around that displays the Artwork file then it is quiet slow as it uses the AWRenderer each time to redraw the window content.
Is there another faster way to make the update?
Like caching the image as JPEG or sprite and use it as redraw source and not the Artworks file?
We don’t do that so far as it will waste the memory but in the sake of speed should do it, right?

What is the best practise here?

as it will waste the memory

Hehe, your executable is half the size of the OS it’s running on. ;)

What is the best practise here?

Memory is (nearly) infinite, user patience isn’t.

I’d definitely go with converting it to a sprite and then showing that.

If it’s a viewer, you’ll only need to be caching the image data for the duration that it is open and on-screen, right?

Like caching the image as JPEG or sprite and use it as redraw source and not the Artworks file?

Rendering to a Sprite would be the sensible option if you want fast redraws, but as you say it will use lots of memory.

Perhaps compromise and only temporarily render to Sprite when the drag action starts and release it once the mouse buttons are released.

Ok thanks for the feedbacks.
So bye-bye memory, hello super fast redraws. :-)