Word 2016 100% CPU usage all the time

Anonymous
2015-07-11T09:24:05+00:00

Hi Guys, just to let you know that the final version of Office does not work properly and have 70-100% CPU issue as reported on numerous posts here. In my case, it's the WORD with which I have the issue with and no remedies posted here help. Please provide the fix as soon as possible, because this bug renders the new suite useless...

Microsoft 365 and Office | Word | For home | Windows

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Anonymous
2016-11-26T15:23:47+00:00

Hi,

To resolve this issue, is your installation of Office for Mac fully updated?

In any Office application go to the Help menu and choose Check for Updates to launch the Auto Update app. Let AutoUpdate install the updates and then restart your Mac.

Update us with results for further assistance.

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Anonymous
2016-06-29T17:59:46+00:00

Hi everyone,

This issue is now fixed. For more information about how to obtain the fix, see https://support.microsoft.com/en-us/kb/3165798.

We very much appreciate your patience!

Best,

-Erik

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Anonymous
2016-12-29T23:43:09+00:00

I'm having the same issue on the same software versions.

It's a large document ~130 pages with a lot of tables. Typing and scrolling are both laggy and I'm frequently getting SBBOD when I change a style (e.g. set a highlighted section of text to bold takes ~5 secs).

CPU usage is <1% when Word is in the background, but bring it to the front and CPU is >50%. It jumps to 80-110% when typing or making changes.

I have the latest Word for Windows in a VM with a fraction of the resources allocated and am not seeing the same issues with this document. 

Changing to Draft view has sped up scrolling and improved typing lag somewhat, but the high CPU usage remains.

UPDATE: updating to the latest fast preview (15.31 161227) has fixed the lagginess, but still experiencing 40-50% CPU when typing. At least it's now usable.

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  1. Anonymous
    2016-04-15T15:36:32+00:00

    Yes, I can confirm that CPU is around 50 ~ 60% if Spelling and Grammar as you Type are turned on in a 50,000-word thesis. I am using Word version 15.20.

    Tis is a reversion: this issue was fixed earlier, it has come back.  I have reported this issue to the Word Developers, and they're on it.  Expect an update shortly.

    Regards

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  2. Anonymous
    2016-04-15T13:57:13+00:00

    Thanks for the workaround!

    The same issue for me. 

    Word 15.21.1

    MacBook Pro (Retina, 15-inch, Mid 2014)

    OS X 10.11.4

    When spell checking is on the CPU usage is 49-52% all the time. When it's off -> 6-7%

    This is annoying BUG for mobile users. The battery lasts up to 50% per hour. 

    UPD. Rolled back to a previous version with Time Machine (15.20). CPU usage 5% with spell checking.

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