Try this.

Right click Desktop | Properties | Appearance tab | Effects button|
UNCheck: Show window contents while dragging

Show window contents while dragging
[[Specifies whether to display window contents as you move or size it. When
this check box is cleared, you can see only the outline when you move a
window.]]

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Hope this helps. Let us know.

Wes
MS-MVP Windows Shell/User

In news:Xns973FCCC4139ABzerothishi@195.130.132.70,
zero <zero@this.hi> hunted and pecked:
> In Explorer, when dragging the mouse to select multiple files, a blue
> (though I suppose the colour depends on the desktop settings) rectangle is
> drawn, stretching and shrinking as the mouse moves. However, this makes
> my computer very slow. In earlier versions (and still on the desktop)
> this is just a dotted outline, which is a lot faster. Does someone know
> how to customize explorer so that it will use the dotted line instead of
> the blue rectangle?
>
> TIA
> zero
>
> --
> Beware the False Authority Syndrome