Products over 800 variations -> internal server error

Hello,
I am running a woocommerce website on Bitnami/AWS. Some of the products have a high number of variations and everything works fine up to 800 variations but over that number the product page does not load and i am getting and “Internal Server Error” message.

Other products with less variations seem to work fine.

I used to have another issue with variations that only about half of them showed on the front end and this has been fixed by increasing “max_input_vars” and “post_max_size” in the php.ini file.

After some testing i’ve figured the “Internal Server Error” issue starts over 800 variations but it still concerns several products and their pages only show the error message.

What do you suggest doing to fix this?
Thank you