For you guys using Firefox. Google "Pale Moon" which is basically Mozilla Firefox optimized for Windows. They claim 25% increased speed. I use it and while I think it may be a bit faster, 25% may be stretching it a bit, but it's hard to measure speed. Firefox with all of it's features and increased security over IE can be a memory hog, especially if it's been open a long period.
Anyway, Pale Moon is a free download and you can still use your Mozilla Firefox if you still wish. Just select which ever browser you wish as your Default browser. Try it out and go back and forth between the two and see if you can tell a difference in speed.