Corrupts Website

What do you mean by corrupt?

Made the website disappear and showed a whole page of strange characters instead.
Solved the problem by disabling the plugin.
And uninstalled it after that, of course.

https://customizewp.com/eliminate-render-blocking-javascript-and-css-above-the-fold-content-in-wordpress-w3-total-cache/
I was trying to follow this tutorial and it went wrong.
I decided to use WP Super Cache instead. It seems to work better.