Speed of light will conflict with WP Rocket?

Hi,

Thanks for contacting us here about this extension.

I'd recommend using just one caching plugin at a time for optimal performance, as running both simultaneously could cause conflicts.
If you'd like to try Speed of Light, I suggest testing it separately from WP Rocket.
If you experience any issues during setup or use, please submit a support ticket and our development team will be happy to assist you.

Regarding image compression: Speed of Light integrates with a third-party service, and you'll receive 3GB of free quota to get started.

Cheers,