Old computer: Dell Optiplex 780 with Intel Core 2 Duo and 4GB RAM running 32-bit Windows 7 Professional and AC v6.3.3 (before update)
New computer: Dell Optiplex 8700 with Intel Core i7 and 12GB RAM running 64-bit Windows 7 Professional and AC v8.2.4 (after update)
Guess which computer is running AC v8.2.4 better? Guess where I can see PDFs in preview window AND open them in default application to edit them. Hint: it's not the new computer and it's not AC 8.2.4.
Just saying.