This thread is resolved. Here is a description of the problem and solution.
Problem:
The client needs a responsive menu plugin that works without the 'Adjust IDs for multilingual functionality' option enabled, as it affects performance. The client's current plugin, Max Mega Menu, requires this option, and another suggested plugin, Responsive Menu, also needs it according to its manual.
Solution:
We recommend testing the following WPML-compatible responsive menu plugins in your setup to see if they can operate without the 'Adjust IDs for multilingual functionality' option:
If these options do not resolve your issue, or if the information provided becomes outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If you still encounter difficulties, please open a new support ticket at WPML support forum.
This is the technical support forum for WPML - the multilingual WordPress plugin.
Everyone can read, but only WPML clients can post here. WPML team is replying on the forum 6 days per week, 22 hours per day.