PdfEmbed and large PDFs

Hello, we have noticed that large PDF documents (exceeding 200 pages) do not display in the Main Viewer, however, they do display correctly at the item level.

Is there a size constraint on PDFs being displayed in the Main Viewer window?  

PDFEmbed is configured with a Height of 1000 and the Embed Type as pdf.js.

I appreciate your help and suggestions!
