When in any of the three corkboard views, “Grid”, “Freeform”, or “Arrange By Label”, the area of the background image that scrolls into view visually scrambles when I move the view around by the sliders. Just as quickly as I move the mouse pointer into any point on the corkboard area, the scrambled image is replaced by the proper view.
Not a showstopper, but…it just shouldn’t happen. 
My computer graphics (other than gaming) are handled by the motherboard chipset, the Intel HD Graphics 3000. The drivers are fully updated. I have another card for gaming only, but it never switches on for productivity stuff.