I created a PDF form quite complex, though Adobe LiveCycle Designer.
Once opened, it works perfectly. However, while it opens quickly in
Adobe Acrobat DC (3-4 seconds), it takes excessive time to open in Adobe
Acrobat Reader DC (15-20 seconds, depending on the performance of the
computer used). Of course I have saved it as a PDF with advanced Adobe
Reader functionality). Has anybody any idea on what the problem is, and
how could I reduce the opening time? Many thanks.