Not sure if this is what you're asking but: I notice that there's a dramatic
difference when I import a PPT, rather than view the PPT while in Share
Application or Desktop mode. When I'm in Share, photos and backgrounds look
very grainy. When I import it, everything looks the way it's supposed to be.
I do have to click on the thumbnail to trigger the animations, though, but I
rather do that than lose picture clarity.