I've seen several topics started on this, with all just saying we need to increase memory, but that isn't the right way to solve a problem. The right way is to fix the problem in the code.
I manage my own hosting (Digital Ocean) and can set everything up the way I want it. I already have the server set up for 512M of memory and this doesn't help at all. I'm not running out of memory on the server, nor is there a heavy server load. The problem is when cornerstone is activated, you pretty much can't access ANY menu item. You click the down arrow to edit or delete it and nothing happens for quite a while. It just hangs there. Same for trying to add a new item.
It was mentioned that some of the options on the menu are something that Cornerstone allows, but I have no clue what those do or how to use them Was there something somewhere that explained it? Is there a way to simply turn those options completely OFF so you're not doing all those database calls while you're trying to edit your menus? I mean, if I don't want or need those options, I should be able to remove them.
Is there something I could add into the functions.php file to remove the options? It's not practical to deactivate Cornerstone just to make edits to your menu! Wow, crazy.