W3 Total Cache is compatible with WPML. This plugin has been tested thoroughly, and you can use it to build multilingual sites without experiencing issues.
W3 Total Cache
– Developed by W3EDGE
Last tested on: February 15, 2017
W3 Total Cache also uses lazy loading for images and minifies not only your site’s code, but also code from 3rd parties. Plus, it includes various security features to help keep your site secure.
Please note: Only the Pro version is compatible with WPML.