excel output to pdf slow on win64 than win32

Our product utilizes the pdfcamp printer driver to generate PDF output.

Here is the story:

Recently, one of our customers reported the performance discrepancy  on win32 and win64 when generating PDF output from their excel file . On my test environment, I could see that the speed of generating PDF output file on win64 box is way too slow than my win32 box. For example, by using the attached excel file to output a pdf  takes 70 seconds on win64. On win32, it only take 30 seconds.

There is what I did,

1. Setup pdfcamp printer driver as default printer.
2. Open the excel file from excel2003 . Print whole book to a file by using  File->print...
3. Monitor the time difference between the start and finish the output.

Very appreciate if you could look into this issue and provide suggestion.

We apologize for any inconvenience this may have caused to you, the printing speed is affected by lots of issues, such as anti-virus, network connection speed (for network printer), CPU idle or busy, available amount of RAM memory, etc.

Because PDFcamp Printer Driver is same on both 32bit and 64bit systems, so we guess the speed may affected by external factors, just for checking, on your 64bit system, please print a document from Word2003 to PDFcamp Printer, how long time between "printer icon" appear and disappear at right-bottom SYSTEM tray area? This time is the REAL time of MS Word Printing, is it possible for you to calculate this time on your both 32bit and 64bit Windows systems?

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