PDFViewer.LoadDocument() is showing a blank page for quite some time if the document is big

When we are showing the document on the UI using PDFViewer, the loading of the document is taking a lot of time. A blank page is begin displayed on the PDFViewer window for some time before displaying the document and sometimes the application stops responding till the document is loaded to the PDF Viewer. Please help us in improving the performance of PDFViewer while loading of the document.

We have added this issue to our back log for testing.