title: Magento layered navigation incredibly slow
body: <p>I have some issue with performance of <strong>layered navigation default module</strong>.</p>
  
  <p>I have 10k products but in category I want to filter there is 60.</p>
  
  <p>Unfortunatley filtering by one attribute last 12 seconds (after  many optimizations)</p>
  
  <p>Every tweak and performance tip I found basically said </p>
  
  <blockquote>
    <p>Don't use layered navigation, it slows down your magento a lot.</p>
  </blockquote>
  
  <p>I have hosted magento on quite fast SSD based hosting with prety big amount of available memory. </p>
  
  <ul>
  <li>Is there a good approach to speed up layered navigation a lot? </li>
  <li>How it should be done?</li>
  <li>How you guys are doing it? </li>
  <li>Are paid modules for layered navigation speed things up?</li>
  <li>Is there some kind of workaround I should use?</li>
  </ul>
  
  <p>Thanks in advance.</p>