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Problem:
You are experiencing high server response times due to repetitive WPML-related database queries, as indicated by Query Monitor. Despite using Object Cache Pro, these queries remain inefficient and affect page load performance.
Solution:
We have reviewed your concern and found that a load time impact of 0.5-1.0 seconds is typical with WPML. The duplicated queries you mentioned contribute only 0.0010 seconds to the load time. Additionally, the website's frontend and backend loaded in less than 1 second, and the PageSpeedInsights score was 96, which is very good. Given these observations, the performance impact of WPML queries is within an acceptable range, and significant optimization may not be necessary at this time.

If this solution does not apply to your case, or if it seems outdated, we recommend opening a new support ticket. We also 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. For further assistance, please visit our support forum at WPML Support Forum.

Problem:
The client reported an issue on a WordPress multisite where administrators could log out without any problems, but other roles encountered an 'Internal Server Error' when attempting to log out. The issue did not occur when WPML was deactivated. The client identified that the problem occurred when the 'Set admin language as editing language' checkbox was not marked or when the language was not set to the site's default.

Solution:
We recommended the client to:
1. Ensure a full backup of the website and database.
2. Deactivate all plugins except for WPML and its addons to check if the issue persists.
3. Reactivate each plugin one by one, checking for the issue after each activation to identify any conflicts.
4. If the problem remains, repeat the steps with the parent theme and a default WordPress theme (such as Twenty Twenty-One or Twenty Twenty-Four).

If the solution provided here is not relevant due to being outdated or not applicable to your case, we suggest opening a new support ticket. We also highly recommend checking related known issues, verifying the version of the permanent fix, and confirming that you have installed the latest versions of themes and plugins. If further assistance is needed, please contact us through the WPML support forum.