SignUp.com will perform the fastest using Chrome, Firefox and Safari. Internet Explorer (IE) 10 and 11 are also supported, although IE tends to run slower than the other browsers. Please be sure you are using the most current version of your favorite browser to ensure speed and compatibility.
Please click this link for free downloads of popular updated browsers http://www.updateyourbrowser.net/en/
Outdated browsers have security and performance issues and do not follow the new web development standards; they should be updated at your earliest convenience.