Instalation CDN Statically

Hey sir, I’m trying to install CDN statically on my wordpress site. I follow tutorial in the internet, I install plugin statically and set API Key then save but nothing happen, when I load my web the image etc its still direct load from my server. On other site has tutorial that I can set it with LiteSpeedCache, so I try to follow this. When it finish, yes the image etc load from statically but its too slow and then the site not display properly

How big are your images?

its web comic, so its big enough

Try using different format such as JPG instead of PNG. Or, if you have a time, you can compress them before publication using TinyPNG service.

i never use PNG, most of the image format is WEBP and JPG