Using WordFence with WP Rocket
Although WP Rocket is compatible with the WordFence plugin, there are a few things that can cause trouble.
WordFence has a Performance option (its own caching system, turned off by default) which conflicts with WP Rocket’s functionality. It is not possible to run both caching systems at once. Since WP Rocket is a complete caching system, you do not need WordFence’s Performance options.
This option can be useful in some cases, but it will slow down your website. Unfortunately, WP Rocket as well as any other caching plugin cannot control this, so we highly recommend not to use this functionality of WordFence.
If you are not sure where to find these options inside WordFence, check out this short video.