Adjust slider speed

First I would like to thank Gourav for answering all my questions so far, great support, thank you! I am wondering how can I change the speed of the slider images?

 

Go to Js > custom.js present in your theme directory and replace current code

Code:

//Flexslider
//<![CDATA[
var $j = jQuery.noConflict();
    $j("document").ready(function(){
    $j('.flexslider').flexslider();
});
//]]> 

with

Code:

//Flexslider
//<![CDATA[
var $j = jQuery.noConflict();
    $j("document").ready(function(){
    $j('.flexslider').flexslider({
        animation: "slide",              //String: Select your animation type, "fade" or "slide"
        slideDirection: "horizontal",  //String: Select the sliding direction, "horizontal" or "vertical"
        slideshow: true,                //Boolean: Animate slider automatically
        slideshowSpeed: 4000,          //Integer: Set the speed of the slideshow cycling, in milliseconds
        animationDuration: 600,        //Integer: Set the speed of animations, in milliseconds
        directionNav: false,            //Boolean: Create navigation for previous/next navigation? (true/false)
        controlNav: false,              //Boolean: Create navigation for paging control of each clide? Note: Leave true for manualControls usage
        keyboardNav: true,              //Boolean: Allow slider navigating via keyboard left/right keys
        mousewheel: false,              //Boolean: Allow slider navigating via mousewheel
        prevText: "Previous",          //String: Set the text for the "previous" directionNav item
        nextText: "Next",              //String: Set the text for the "next" directionNav item
        pausePlay: false,              //Boolean: Create pause/play dynamic element
        pauseText: 'Pause',            //String: Set the text for the "pause" pausePlay item
        playText: 'Play',              //String: Set the text for the "play" pausePlay item
        randomize: false,              //Boolean: Randomize slide order
        slideToStart: 0,                //Integer: The slide that the slider should start on. Array notation (0 = first slide)
        animationLoop: true,            //Boolean: Should the animation loop? If false, directionNav will received "disable" classes at either end
        pauseOnAction: true,            //Boolean: Pause the slideshow when interacting with control elements, highly recommended.
        pauseOnHover: true
                         
                          });
   
 
   
});
//]]>
//]]>