More than 23 modules causes the backend to be slow/stuck

[diviengine]

If you have more than 23 modules it causes the backend to be slow/stuck. You can test by have WooCommerce for example and add more than 23 modules, when you click on the product tabs it does nothing/hangs around for 3-4 seconds and then works again.

No matter what I do it is down to the number of modules