This thread is resolved. Here is a description of the problem and solution.
Problem: We are now fully functional with WPML and happy with the product and its features. What can we do to optimize WPML performance and increase website speed?
Solution: WPML 4.3 version solved the performance issues that some sites experienced. Updating to the latest version of WPML and its add-ons should resolve the problem.
If you are still running into performance problems, first follow our FAQ entry about preventing performance issues with WPML. This FAQ includes a number of simple steps to follow.
In case you want to profile your site's performance and get to the bottom of performance problems, follow the guide for debugging performance problems.
You can also take a look at the list of WPML compatible plugins validated by our compatibility team.
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