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    <body><span class="vcard"><a class="email" href="mailto:newbie-02@gmx.de" title="b. <newbie-02@gmx.de>"> <span class="fn">b.</span></a>
</span> changed
          <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Undo in Calc slow"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=133244">bug 133244</a>
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            <th>What</th>
            <th>Removed</th>
            <th>Added</th>
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           <td style="text-align:right;">Ever confirmed</td>
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            <b><a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Undo in Calc slow"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=133244#c5">Comment # 5</a>
              on <a class="bz_bug_link 
          bz_status_NEW "
   title="NEW - Undo in Calc slow"
   href="https://bugs.documentfoundation.org/show_bug.cgi?id=133244">bug 133244</a>
              from <span class="vcard"><a class="email" href="mailto:newbie-02@gmx.de" title="b. <newbie-02@gmx.de>"> <span class="fn">b.</span></a>
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        <pre>@Telesto: win repro, lin not, 

win: 

~5 seconds, slower on subsequent tries, adds up to ~12 seconds, 

lin: 

no repro, milliseconds

versions: 

Version: 7.0.0.0.alpha1 (x64)
Build ID: 6a03b2a54143a9bc0c6d4c7f1...
CPU threads: 8; OS: Windows 6.1 Service Pack 1 Build 7601; UI render: default;
VCL: win; 
Locale: de-DE (de_DE); UI: en-US
Calc: 

Version: 7.0.0.0.alpha1
Build ID: 6a03b2a54143a9bc0c6d4c7f1...
CPU threads: 8; OS: Linux 4.19; UI render: default; VCL: gtk3; 
Locale: de-DE (en_US.UTF-8); UI: en-US
Calc: 

additional note(s): 

my construction 
"=CHAR(INT(RAND()*26+1+96))&CHAR(INT(RAND()*26+1+96))&CHAR(INT(RAND()*26+1+96))&CHAR(INT(RAND()*26+1+96))&CHAR(INT(RAND()*26+1+96))" 
is - intentionally! - nagging spreadsheets, for productive use read and keep in
mind: 

<a href="https://chandoo.org/wp/handle-volatile-functions-like-they-are-dynamite/">https://chandoo.org/wp/handle-volatile-functions-like-they-are-dynamite/</a>

observe: from undo you don't get back the previous state, but fresh calculated
random values. maybe in win 'rand' is a little slower? 

prev. likely not the issue here as: 

with win after one copy and paste to other columns: 

much better performance even with 10 times the data, ~ 2 seconds ...???
**confused**</pre>
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