title: Automated tests too slow on Jenkins
body: <p>I'm running Selenium Webdrive tests on Jenkins (Debian 9 without GUI) using Chromedriver and xvfb, and they are extremely slow as compared to local execution. A click is done in 4 minutes comparing to 300 ~ 400 milliseconds on my local machine.  </p>
  
  <p>the details of the environment are as follows :</p>
  
  <ul>
  <li><strong>Jenkins</strong> (running on Debian 9 without GUI) + Xvfb</li>
  <li><strong>Chrome</strong> = 67.0.3396.99</li>
  <li><strong>Java.version</strong>: '1.8.0_171' </li>
  <li><strong>Chromedriver Version</strong>: 2.40.565383</li>
  <li><strong>Selenium-java</strong> = 3.13.0</li>
  </ul>
  
  <p>(The test project is in java (maven) with the framework TestNg v6.14.3)</p>
  
  <p>I tried also <strong>Firefox</strong>, it's not as long as Chrome but it's still long compared to local</p>
  
  <p>Any ideas ?</p>