Hello,
Thank you for contacting Rank Math and sorry for any inconvenience that might have been caused due to that.
Please install the plugin Query Monitor to the affected website and look for queries related to our plugin and share a screenshot with us. This is so we can identify what’s causing the slowdown of your website when loading the Rank Math metabox.
Please also share the login credentials to your staging environment in the sensitive area so that we can have a closer look at the issue and advise.
Looking forward to hearing from you.
Hi there,
The only slow query I get when running a test post is this:
SELECT DISTINCT meta_key
FROM f4c_postmeta
WHERE meta_key NOT BETWEEN ‘_’
AND ‘_z’
HAVING meta_key NOT LIKE ‘\\_%’
ORDER BY meta_key
LIMIT 30
meta_form
post_custom_meta_box
do_meta_boxes
require(‘wp-admin/edit-form-advanced.php’)
0.0622
The screenshot is at: https://imgur.com/a/Drmb6r9
For this example, the box actually loaded after a few seconds, which is better thankfully than some of the times it still doesn’t load over the course of minutes.
Do you need admin access to the staging environment?
Thanks!
Hello,
Yes, please include the staging logins in the sensitive data section so we can investigate this issue further.
Looking forward to helping you.
Thank you.
Hello,
I have updated the sensitive data as requested. Can you please check further?
Thank you.
Hello,
I’ve tried testing some of the posts and created a draft post as well, but I’m unable to replicate the issue.
Could you please confirm if there’s a specific post/page we can test to investigate the issue further?
Meanwhile, the staging site’s PHP Memory limit is only 256M. Please check your live site’s PHP values which are too low. You can get in touch with your web host and ask them to set the following values:
PHP Memory Limit: 512M
Max input time: 150
PHP time limit: 120
PHP max input variables: 1000
Looking forward to helping you.
Thank you.
Thanks for the reply!
I chatted with my host and received the following response:
“Your PHP Memory Limit would be 256M on both live and staging, unfortunately we are not able to increase that limit. Max Input Time is set to 300, PHP time limit is set to 300, Max input vars is set to 10000.”
I will update the sensitive data with an example of a published post that when opened takes a very long time to load the RankMath box on my end.
Thanks!
Hello,
We tried enabling troubleshooting mode on your staging websites and if we only enable the plugin Rank Math, Classic Editor and the theme Kadance, the Rank Math metabox loads right away.
There may be some plugins that is causing this slow down to our plugin, to further determine that, you may refer to our guide here: https://rankmath.com/kb/check-plugin-conflicts/
Looking forward to helping you with this one.
I just tried the same thing–enabling Troubleshooting Mode on my computer in the staging site.
I used the default 2023 theme and enabled only RankMath and the Classic Editor. I still get the issue. (I will put a Loom video in the Sensitive Data section showing the problem still persisting.)
When I disable the Classic Editor plugin, though, the SEO box loads immediately in the block editor.
I have trialed disabling Classic Editor on my live site, and indeed, I don’t have issues with the RankMath box not loading in the block editor. This leads me to believe there is a conflict between RankMath and using the classic editor?
Thanks!
Hello,
I wasn’t able to replicate the issue on your site. The meta box is currently working fine even when Classic Editor is enabled:

Please clear the cache of your site & browser and check again.
Let us know how that goes. Looking forward to helping you.
Hello,
Since we did not hear back from you for 15 days, we are assuming that you found the solution. We are closing this support ticket.
If you still need assistance or any other help, please feel free to open a new support ticket, and we will be more than happy to assist.
Thank you.