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Excel File - Slow to Open/Save (2.5MB)

  1. #1
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    Excel File - Slow to Open/Save (2.5MB)

    Hi,

    I have an excel file that takes long to open/save.

    The sheet is designed to take test data and analyse and produce graphs/ test report. Even with no data entered it can take ~2 minutes to open or close the file.

    The files contains conditional formatting, named ranges, a number of macros (if these make any difference?).

    I've tried looking through existing threads for solutions i.e. searching for external links, disabling 'save external link values), but haven't solved the problem.

    I have also tried saving locally & on the network, both give the same issue.

    Is there anything you guys can suggest?

    Thanks in advance.
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    Last edited by asrarrazaq; 06-28-2019 at 03:59 AM.

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    Forum Expert Olly's Avatar
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    Re: Excel File - Slow to Open/Save (2.5MB)

    The dynamic named ranges (using volatile function OFFSET) are very expensive to performance. You have a large number of these. There are better ways of segmenting your data, than this.
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    Re: Excel File - Slow to Open/Save (2.5MB)

    Hi Olly,

    Thanks for your response. What alternatives would you suggest? the ranges have to be dynamic as the amount of rows in the test data can vary form test to test. Also the test is often done in 3 cycles, the sheet needs to be able to differentiate between the cycles and operate on the data pertaining to each cycle individually.

    Once again thanks for your help.

  4. #4
    Forum Expert Olly's Avatar
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    Re: Excel File - Slow to Open/Save (2.5MB)

    I'd suggest a completely different approach, where you normalise and categorise your data first, then report against it by parameter. I'd use Power Query to transform and restucture the source data, and Power Pivot to report on it.

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