Firefox freezes and more...

Firefox always freezes when i go to this site stocktwitz/earnings and i was forced to uninstall the app in my phone who meant i lost many of my bookmarks in the app. Why is firefox always so clumsy to handle many sites who can very often freeze this browser, Google Chrome don't have the same problem. Also not long ago i was using my netbank and there was a question there with a box who was important to mark so i could send money but that text wasn't seen in firefox, i saw it in all other browsers. You have a major problem