I did a fresh install of Firefox because it was being weird. I wanted new windows to open if they had to, and changing settings around wasn’t doing the trick before. CCleaner was run as well, for whatever registry entries were bogging my system down.
I also removed Firefox Preloader. I thought it might help, but I really didn’t need it because it “is a little program for people who use Mozilla Firefox on older machines“. My computer isn’t that bad. It isn’t the greatest, but it isn’t that bad, either.