title: Matlab help, doc commands very slow
body: <p>I can't put my finger on why it's doing this, but since a few days help takes a lot of time to show. Either inline (selecting a function, selecting "help for"), or by using the commands <code>doc</code> or <code>help</code>. The command <code>doc cmdname</code> takes about 10 seconds to show the help window. I did, taking <code>fwrite</code> as example, try <code>profile on;doc fwrite;profile viewer</code> and digging through the rabbit hole I arrived on a private java matlab method which is taking forever:</p>
  
  <pre><code>tic;
  com.mathworks.mlwidgets.help.HelpUtils.getDocCommandArg('matlab\fwrite', true);
  toc 
  
  Elapsed time is 9.993832 seconds.
  </code></pre>
  
  <p>Any idea what could be causing that issue? It also happens in safe mode, with no other running programs than MATLAB. I'd try a complete reinstall of MATLAB, but if I could avoid that that'd be great.</p>