Hello,
You can check the benefits of all the performance options by applying them one by one. And you can also read the advantage or purpose of every single option shown below it. Every single option have a little description below it so you can read it and enable those options if you find them useful and beneficial.
For example the purpose of “Nanoscroller library” is that, this library adds nice style to elements with scroll bar like cart widget, filters widget, AJAX search results etc. In modern browsers we can style them without this JS library so you can disable it.
Screenshots: https://jmp.sh/HEK8ii7
Best Regards.