Ineffective Plugin w/ No Support

Like everyone else, I wanted to speed up my site and deferring javaScript is a must. The problem is this plugin does more damage than it helps.
– Stops drop down menus in Avada from working.
– Google Maps, broke.
– Sliders, some break.
ZERO explanation as to how to exclude certain javascript form deferring. Went to the support board, and they help no one.
Good idea, but needs allot of work!