Combined PDF page display speed difference between Acrobat 8 Pro and Acrobat X Pro

I have encountered a display speed issue with regards to combining Tiffs with Acrobat X Pro.  The Tiffs are between 200 KB and 600 KB.  Tested the issue by using a series of Tiffs originally combined using Acrobat 8 Pro but used Acrobat X Pro to combine them.  When I open the combined PDF files using X, I can cycle through the pages of the one created using 8 significatinly faster (i.e. about as fast as I can click) but the file created using X is significately slower.  Note: PDF file size is smaller using X (30.9 MB) than same combined files using 8 (46.1 MB).  Any ideas on what might be causing this issue?

Found a Tips & Tricks document for Acrobat 8 which indicated the default Monochrome Compression setting for Acrobat 8 is CCITT G4.  Recreated the combined PDF file from the original Tiffs using X Pro with the modified setting and works like a charm.  Thanks for the point in the right direction.

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