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?

Has no one come up with an answer to this?? Tried all the fixes, disabling add ins, hardware acceleration, etc This is maddening. I keep having excel close. and restart. Only to close after i try to copy and paste. And the CPU is constantly over 50%

lidihertu , a lot of the people on this thread have tried that one with no success... (

Go to options > Advanced > Scroll Down to display settings > check the disable hardware graphics acceleration box source: http://superuser.com/questions/489695/excessive-cpu-fan-noise-due-to-ms-office-2013

I also have this issue with Excel 2013. CPU usage goes to 60% even though the files are not many, and not complicated (RAM is free ) You can see two photos I attach to this situation I also follow the lead of the graphics but not optimistic (about Disable hardware graphic acceleration)

Hi, You may try disabling the hardware acceleration and then check if you are able to re-produce the issue. Open Excel > Click on File > Options > Advanced > Display > Enable the option ‘ Disable hardware graphic acceleration’ . Let us know the results to assist you better. Thank you. Thanks for the suggestion, I disabled H.W.A, and closed Excel, then re-opened it again and the CPU usage was normal,, I then re-enabled H.W.A, then closed and opened Excel and all was still ok. Strange, but thanks

Excel 2013 High CPU Usage

Anonymous

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?

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

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Anonymous

2016-02-17T03:08:27+00:00

Has no one come up with an answer to this?? Tried all the fixes, disabling add ins, hardware acceleration, etc

This is maddening. I keep having excel close. and restart. Only to close after i try to copy and paste. And the CPU is constantly over 50%
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Anonymous

2016-02-15T12:19:47+00:00

lidihertu, a lot of the people on this thread have tried that one with no success... (
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Anonymous

2016-02-15T09:09:23+00:00

Go to options > Advanced > Scroll Down to display settings > check the disable hardware graphics acceleration box

source: http://superuser.com/questions/489695/excessive-cpu-fan-noise-due-to-ms-office-2013
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Anonymous

2016-02-14T15:45:53+00:00

I also have this issue with Excel 2013. CPU usage goes to 60% even though the files are not many, and not complicated (RAM is free )

You can see two photos I attach to this situation

I also follow the lead of the graphics but not optimistic (about Disable hardware graphic acceleration)
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Anonymous

2015-12-11T19:32:41+00:00

Hi,

You may try disabling the hardware acceleration and then check if you are able to re-produce the issue.

Open Excel > Click on File > Options > Advanced > Display > Enable the option ‘Disable hardware graphic acceleration’.

Let us know the results to assist you better.

Thank you.

Thanks for the suggestion, I disabled H.W.A, and closed Excel, then re-opened it again and the CPU usage was normal,, I then re-enabled H.W.A, then closed and opened Excel and all was still ok. Strange, but thanks
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