Loading issues

Good day,

Stock central on my client’s site is having issues with loading two specific categories and the products in these categories. It just hangs and nothing happens. I cannot scroll between pages to get to the products in these categories, search by code or select these categories via the filter. The products in these specific categories in question all have many variations.

I have done uninstall and re-install of ATUM with “Delete data when uninstalling” enabled but this hasn’t helped.

Please can you advise further?

WP/WC/server info:

WooCommerce version: 4.6.0
WooCommerce REST API package: 4.6.0
WooCommerce Blocks package: 3.4.0
Action Scheduler package: 3.1.6
WooCommerce Admin package: 1.6.1
WordPress version: 5.5.1
WordPress memory limit: 256 MB
Server info: Apache
PHP version: 7.4.11
PHP post max size: 64 MB
PHP time limit: 60
PHP max input vars: 2500
cURL version: 7.52.1, OpenSSL/1.0.2u
SUHOSIN installed: –
MySQL version: 5.5.5-10.1.46-MariaDB-1~stretch
Max upload size: 64 MB