I just updated to Firefox 54. Is it the best Firefox ever as touted by others? I’ve been using Chrome lately. Occasionally, I use Firefox just to check out to see what’s going on with the competition. Firefox 54 contains multiple content processes which prevents it from sucking up the much needed RAM. Multiple content processes improve the stability and performance because it prevents one lousy tab from affecting the performance of other tabs. You get 4 content processes as the default. If you want more, you can change the configuration from about:config. If you want to learn more about the nitty gritty of Firefox 54, check out this Mozilla’s blog post.