[Qt-interest] Have any recommendations of enhance the GUI speed of using GraphiscView/Scene/Items ?

[Duan,Lin]

I am performing a task of building a GraphicsView based GUI application. But I found that when I RubberBand-select about 20 Items,then Drag them together within the unique GraphicsView/Scene,it seems need I wait it for redraw (very very slow).
( there were many GraphicsPathItems connected the items, then moving the items together , the GraphicsPathItem redraw in the GraphicsPathItem::mouseMoveEvent()).

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