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Old 01-10-2017, 10:10 AM
g.becattini g.becattini is offline Windows 10 Office 2016
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Default Office 2016 very slow in large documents

I suppose I found a bug in Office 2016, not present on previous versions.



Word 2016 seems having added a bug related to image resizing but not only; also general responsiveness become much more luggish.

The problem arises only after the first execution. The first time you execute Word it runs smootly. Subsequent execution becomes very slow. If you start Word in Safe Mode, then it is again fast. Subsequent executions are again slow.

I believe that many users are not aware of this behavior and simply think "Office 2016 is worse than 2013", beacuse they do not try to start it in Safe Mode.

The issue has ben replicated on many different computers (always under W10) and virtual machines, even after a fresh reinstall. It is absolutely repetitive and easy to demonstrate.

An extra information: the problem is reduced almost to zero if you enable Hyper-V and create a Virtual Switch (dont ask me why; I suppose something related to the new cooperative functions introduced with Office 2016).

The whole history is here: https://social.technet.microsoft.com...016setupdeploy

Thanks for any help
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Old 01-10-2017, 12:17 PM
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macropod macropod is online now Windows 7 64bit Office 2010 32bit
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The fact that running in safe mode has an impact strongly suggests an addin is responsible for the performance degradation, not Word itself. Try disabling any addins - especially 3rd-party ones - then re-enabling them one at a time until you find the culprit.
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Old 01-10-2017, 03:38 PM
Charles Kenyon Charles Kenyon is online now Windows 10 Office 2013
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I join in Paul's analysis and recommendation.
Add-Ins in Microsoft Word
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Old 01-10-2017, 11:28 PM
g.becattini g.becattini is offline Windows 10 Office 2016
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Thanks for your reply. No addin is installed nor enabled, it is the first thing I checked.

The problem is not tied to any third party software, you can easily replicate it even after a clean W10 install followed by only Office 2016 install (32 or 64 bit, same effect).

It is there only after the second execution.
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