Cloudflare’s Rocket Loader
But according to this article the loaded scripts can be ignored by giving data-cfasync="false" to them. First of all, you should update your slider to version 3.0.36 or newer, then find the Script attributes option at the Global settings, and write this code there:
'data-cfasync' => 'false',
Then go to the Global settings, and click on clear cache.