You're most welcome, actually i am not really familiar with Cloudflare configuration, perhaps you can try turn it off and see how it goes.
If you ask me for the opinion, I would suggest you that consider to disable your site backend cache system to use mod_pagespeed from your server, it's actually an apache / nginx module that can be used to compress and minify a page on the web server's layer without compromising performance of php, so it will improve your site performance faster as well.
Then enabled Gzip compression from backend, it will reduces the file size of all scripts and css files being rendered on the page.
You can read more about mod_pagespeed from
https://developers.google.com/speed/pagespeed/module/
And the Cloudflare server still remain enabled it.