To change the recommended memory limit of 768M in Magento 2 you need some steps. I show you in this litte tutorial how to change the maximum amount of ram magento is allowed to use.
If you have any performance issues or a server with enougth ram you can change memory_limit without any problems to 2G or 2048 mb.
- .htacces file in root
Search for php_value memory_limit and change it to 2048M
I had this file also in root where i had to change memory_limit
Search for this file in the document root and also on the webserver. On mittwald it is located in /etc/php/php.ini