Excel 2013 High CPU Usage

Anonymous
2013-10-21T13:21:14+00:00

We work on a product that uses Excel, we are now testing all aspects of Excel 2013. During these tests, we seem to have encountered a problem where excel suddenly causes high CPU usage by only drawing some shapes. We have been able to minimize the problem into the following few steps:

  • Open a new, clean workbook
  • Draw an oval, give it a material (right-click, choose “Format Shape”, click “Effects”, “3D Format”, “Material”. Choose any material.)
  • Duplicate the Shape four times, producing Oval2, 3, 4 and 5.
  • Group Oval2 and 3. Group Oval 4 and 5.
  • Press Alt-F10, in the selection window, hide the group containing Oval2 and 3.
  • Deselect everything (!) by clicking in an empty cell.

Now observe the task manager. On an I7 Windows 7 PC, Excel now runs 4 cores at around 50%. Also, OnTime functions are not being called anymore because of this rendering bug. Once you select any shape, or un-hide the hidden group, Excel becomes quiet once again. Also, the problem can be prevented from happening by removing the materials in the shapes.

This bug (?) seems to happen also on most of our more complicated applications, and it would take lots of work to re-design everything not to use materials. Can anyone confirm this problem, provide a workaround?

Microsoft 365 and Office | Excel | For home | Windows

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  1. Anonymous
    2016-03-02T18:39:17+00:00

    Here is the answer:

    http://devopssurf.blogspot.co.il/2016/03/office-2013-high-cpu.html

    office 2013 high cpu

    Short and Simple

    Microsoft has " recalled" three office updates that cause excel 2013 , word 2013 or outlook 2013

    to consume high cpu usage .

    uninstall the following KB's and you are good to go.

    KB3114717

    KB3114734

    KB3114736

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  2. Anonymous
    2016-03-02T18:36:36+00:00

    this is the answer i got from Microsoft:

    office 2013 high cpu

    office 2013 high cpu

    Short and Simple

    Microsoft has " recalled" three office updates that cause excel 2013 , word 2013 or outlook 2013

    to consume high cpu usage .

    uninstall the following KB's and you are good to go.

    KB3114717

    KB3114734

    KB3114736

    go to : http://devopssurf.blogspot.co.il/2016/03/office-2013-high-cpu.html

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  3. Anonymous
    2016-03-02T18:31:21+00:00

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  4. Anonymous
    2016-03-02T18:29:15+00:00

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  5. Anonymous
    2016-02-28T15:52:11+00:00

    I don't consider this the ultimate solution; however, based on this article I chose to "Disable hardware graphics acceleration". At least for now, I can work again. And, I'll keep looking for a better solution. Maybe Office 2016...

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