Mobile menu not loading/responding correctly

Hi,

I’m having an issue with the way my menu loads/responds on mobile devices/ tablets.

my website: takillero.com

Here is a picture of how the menu loads; google gives this error along with that picture
“Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.”

http://takillero.com/wp-content/uploads/2015/05/Screenshot-16.png

appreciate the help,

Thanks!