My blog runs faster with WP Super Cache

I installed this plugin a few years ago for both my blog’s previous theme and my current theme. At first my website ran extremely slow (20+ seconds to load) for many pages. Now, average loading time is about 4 seconds per page. I also recently enabled gzip and followed all recommended settings. Even though my blog still isn’t the fastest loading (especially on my old computer), this plugin speeds things up a lot.