Yup, no flashing. I haven't tested it yet with real text or even grayscale images, only simple black-and-white boxes. I didn't really see any ghosting except that when you stop displaying the black box you get a faint outline (ie, the inside is fine, but the edge has some ghosting).
In short, it doesn't seem to be a big problem pending more testing. I'll also try sending the refresh command twice to see if multiple refreshes help.
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