Deferring JS is breaking site

Hi, I am using WP Rocket to defer the JS and speed up the site. The problem is when i switch it on it breaks the Slideshow on the homepage plus the main navigation stops working. I have looked at the JS console and it shows the issues when the deferring is switched on. Would it be possible for you to take a look and list the JS files for me that are breaking the site when deferring is switched on and then I may be able to tell WP Rocket not to defer them whilst still deferring all the others. Hopefully then i can speed the site load speed up. I just need the JS file names and i am not experienced enough in how to locate them. I hope you can help.