Free Spire.PdfViewer LoadFromStream is really slow

[eric.mck]

It's taking 10-15 seconds to actually show the PDF document after the form is visible to the user. These are single page PDFs. I don't understand why it would take so long to render them. I'm calling the LoadFromStream method on the PdfViewer and passing the appropriate PDF stream. Is there some way that I can improve performance?

[amy.zhao]

Hi,

Thanks for your posting.
Trial version did some improvement for performance. Please try the latest version, Spire.PDF Pack(Hot Fix) Version:3.6.20.

If the version doesn't help you, please share your pdf document for investigation. Thank you.

Best Regards,
Amy
E-iceblue support team