WordPress backend is reacting very slow which is causing server errors.

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Last updated by Itamar 3 weeks ago.

Assisted by: Itamar.

Author	Posts
September 30, 2025 at 12:30 pm
witoldR	Background of the issue: I am experiencing issues with the WordPress backend on my site hidden link. I am trying to edit a post or make changes in the backend. Symptoms: The WordPress backend is very slow, and I keep getting 502 and 504 server errors. Questions: How can I make WPML less heavy for my website? How can I make my back-end work faster.
September 30, 2025 at 1:08 pm #17444882
Itamar WPML Supporter since 02/2016 Languages: English (English ) Timezone: Asia/Jerusalem (GMT+03:00)	Hi, This ticket has been inactive for some time. I didn't get a reply from you. So, I've transformed this chat into a support ticket because you may still need our help. You were unable to see that we have new versions because you have not registered WPML on this site. I've registered it on my account for you. Now you will see we have new versions. Please update our plugins and check again to see if the backend performance issue persists. Regards, Itamar.
September 30, 2025 at 1:09 pm #17444885
witoldR	My back-end is very slow. Could be because we use multiple languages on the website. I have the newest version of WPML. I did an APM test earlier and WPML came out as the root cause of my back-end being so slow. It takes forever when I try to edit a post or add a new language post.
October 2, 2025 at 12:09 pm #17451978
Itamar WPML Supporter since 02/2016 Languages: English (English ) Timezone: Asia/Jerusalem (GMT+03:00)	Hi, I can see that WPML and its add-ons are updated on your site to their latest versions. This is good! I can also see that WordPress has a new version -- 6.8.3. Please see the attached screenshot. It would also be good to update WordPress. Are you still getting this very slow backend? If so, let's try a few steps to understand the issue better: Please make a backup before proceeding. 1) Install Query Monitor plugin (https://wordpress.org/plugins/query-monitor/). You can read our guide about using it here: https://wpml.org/th/tutorials/2019/10/analyze-performance-issues-with-query-monitor/ 2) Check load time and number of queries in the top bar. Load time has "s" and queries "Q" 3) Disable all WPML plugins and check the load time and the number of queries now. 4) Disable all other plugins and leave active only WPML plugins, switch to the WP default theme. Check again. ** Important! Please make a full site backup (files and DB) before you proceed with those steps** Please let me know how it goes and share each result with me. Regards, Itamar.