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        <tr>
          <th>Bug ID</th>
          <td><a class="bz_bug_link 
          bz_status_UNCONFIRMED "
   title="UNCONFIRMED - High CPU usage inserting a table in a large document"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=120064">120064</a>
          </td>
        </tr>

        <tr>
          <th>Summary</th>
          <td>High CPU usage inserting a table in a large document
          </td>
        </tr>

        <tr>
          <th>Product</th>
          <td>LibreOffice
          </td>
        </tr>

        <tr>
          <th>Version</th>
          <td>5.1.0.3 release
          </td>
        </tr>

        <tr>
          <th>Hardware</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>OS</th>
          <td>All
          </td>
        </tr>

        <tr>
          <th>Status</th>
          <td>UNCONFIRMED
          </td>
        </tr>

        <tr>
          <th>Severity</th>
          <td>normal
          </td>
        </tr>

        <tr>
          <th>Priority</th>
          <td>medium
          </td>
        </tr>

        <tr>
          <th>Component</th>
          <td>Writer
          </td>
        </tr>

        <tr>
          <th>Assignee</th>
          <td>libreoffice-bugs@lists.freedesktop.org
          </td>
        </tr>

        <tr>
          <th>Reporter</th>
          <td>telesto@surfxs.nl
          </td>
        </tr></table>
      <p>
        <div>
        <pre>Description:
High CPU usage inserting a table in a large document

Steps to Reproduce:
1. Open <span class=""><a href="http://bugs.documentfoundation.org/attachment.cgi?id=145054" name="attach_145054" title="Example file">attachment 145054</a> <a href="http://bugs.documentfoundation.org/attachment.cgi?id=145054&action=edit" title="Example file">[details]</a></span> without spell checker enabled
2. Insert a table (say 2x2) after the first paragraph ("Wrist?")
3. Monitor CPU usage
4. Delete the table (monitor CPU usage again)

Actual Results:
20 seconds 100% CPU usage (straight line) with 6.2
16 seconds 100% CPU usage (straight line) with 5.2
11 seconds fluctuating usage (+/- 90) with 5.1
Barely noticeable with 4.4.7.2


Expected Results:
Something like LibO 4.4.7.2


Reproducible: Always


User Profile Reset: No



Additional Info:
Found in:
Version: 6.2.0.0.alpha0+
Build ID: 7d242f3bd7277236046f90d3f32b9792fd8ea97b
CPU threads: 4; OS: Windows 6.3; UI render: default; 
TinderBox: Win-x86@42, Branch:master, Time: 2018-09-18_23:43:19
Locale: nl-NL (nl_NL); Calc: CL

also noticeable in MacOS</pre>
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