I have a spreadsheet that takes about 10-15 seconds to calculate on every
entry. It consists of multiple pages that are identical as far as the
formulas go, differing only in the data on each page. The formulas
accomplish auto-sorting among other things, and are intertwined and look to
constants set in other cells on the same page. At this point I dont know
how to simplify them. The formulas reference only cells on the same page.
When I look at the System Monitor from Control Panel/Administrative
Tools/Performance, the processor is maxed out at 100%, but memory and
physical disk are loafing along at a low %.

Heres my question. If I divide the workbook in two by making a copy and
deleting half the pages in each of the two versions, calculation speeds up
considerably, to just a couple of seconds.. Whats going on? If the
formulas only reference one page, why does the number of pages affect
calculation speed?

Thanks in advance for any information.