PDFs render slower and take longer to load than ePUBs. This is one reason the industry is moving away from it as a standard. We recommend closing out of any other apps that may be using RAM and letting the pages completely render before continuing to move forward in the book. We also recommend exiting out of the app and doing a full power down, then restart of the device. If you continue to experience problems we recommend getting in touch with your e-book retailer and asking for a copy of your book in an ePUB format.
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