Thank you for contacting us.
Testing with similar PDF of that size it takes about 4 seconds to load on my computer. However it is possible with different files or on different machines the result to be different. Currently processing big images is a time consuming operation but I can assure you that we will do our best to improve the performance of PdfViewer in the future releases.
If you have any other questions or concerns please do not hesitate to contact us again.
the Telerik team
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