backend performs slow with WPML

This thread is resolved. Here is a description of the problem and solution.

Problem:
The client is experiencing slow backend performance with WPML due to the absence of caching plugins and a high number of backend POST requests.
Solution:
1. We recommend providing WPML support debug information from your site. To do this, log in to your site, navigate to WPML → Support, click on the 'debug information' link at the bottom of the page, copy the entire content of the text box, and paste it into our support forum. More details can be found here: https://wpml.org/faq/provide-debug-information-faster-support/.
2. Install the Query Monitor plugin to help identify the source of the slow performance. Share the results with us under three conditions: using your website as is, with WPML disabled, and with all other plugins disabled except for WPML. Ensure you back up your site or test on a staging site before making these changes.
3. Review our documentation on boosting the performance of your multilingual WordPress site here: https://wpml.org/tutorials/2022/03/boosting-the-performance-of-your-multilingual-wordpress-site/.
4. Consider using caching plugins, as they are crucial for sites with a large number of languages.

If this solution does not apply to your case, or if it seems outdated, we highly recommend checking related known issues at https://wpml.org/known-issues/, verifying the version of the permanent fix, and confirming that you have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 further assistance is needed, please open a new support ticket at WPML support forum.

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Tagged: Performance

This topic contains 3 replies, has 1 voice.

Last updated by Mihai Apetrei 3 weeks ago.

Assisted by: Mihai Apetrei.

Author	Posts
January 20, 2025 at 2:18 am #16611503
valeng	Background of the issue: I'm using WPML together with WPML Redirect Based on IP Country. The plugin will not work if we have caching plugins installed. WPML generates a lot of backend POST requests and due to the absence of any cache plugin, the backend performs slowly. Symptoms: The backend performs very slowly due to the absence of any cache plugin. Questions: How can I optimize the WPML plugin hits to improve backend performance?
January 21, 2025 at 9:06 am #16617078
Dražen Supporter Languages: English (English ) Timezone: Europe/Zagreb (GMT+01:00)	Hello, Thanks for contacting us. While you wait for my colleague to take over the ticket, let me try to help you with the issue quickly. 1) In order to expedite handling your support requests, can you please share WPML support debug information from your site. - To give debug information, login to your site and go to WPML → Support. From there click on the “debug information” link at the bottom of the page. - Once on the “debug information” page, select the entire content of the text box and copy it. - Now go back to our support forum, find debug information box and paste it. More information on the link: https://wpml.org/faq/provide-debug-information-faster-support/ 2) Please install Query monitor plugin and share with us the results for the backend: - currently, as you use your website - when WPML is disabled - when other plugins are disabled and using only WPML plugins Please make sure to create a backup, before doing any actions or better test this on the staging site, just in case. Regards, Drazen
January 21, 2025 at 9:49 am #16617414
valeng	I have installed the Query monitor plugin. but i do not know whree to find the results.
January 22, 2025 at 2:30 pm #16623684
Mihai Apetrei Supporter Languages: English (English ) Timezone: Europe/Bucharest (GMT+02:00)	Hello, Once you enable the plugin, you should see a colored area in the top bar that displays the queries currently being executed. Additionally, we have some helpful documentation to guide you in the right direction: https://wpml.org/tutorials/2022/03/boosting-the-performance-of-your-multilingual-wordpress-site/. Using caching plugins is crucial, especially for a site with a large number of languages like this one. My colleague also shared a great list in this existing ticket: https://wpml.org/forums/topic/how-can-i-improve-performance-of-a-slow-site/#post-15350474. When you have some time, please review those resources. They will definitely help improve the site's performance. I hope that you will find all this information useful. Mihai Apetrei