diff --git a/README.md b/README.md
index 25b02ad..182d604 100755
--- a/README.md
+++ b/README.md
@@ -72,13 +72,16 @@ AOS.init();
 // You can also pass an optional settings object
 // below listed default settings
 AOS.init({
-  // Global settings
+  // Global settings:
   disable: false, // accepts following values: 'phone', 'tablet', 'mobile', boolean, expression or function
   startEvent: 'DOMContentLoaded', // name of the event dispatched on the document, that AOS should initialize on
   initClassName: 'aos-init', // class applied after initialization
   animatedClassName: 'aos-animate', // class applied on animation
   useClassNames: false, // if true, will add content of `data-aos` as classes on scroll
   disableMutationObserver: false, // disables automatic mutations' detections (advanced)
+  debounceDelay: 50, // the delay on debounce used while resizing window (advanced)
+  throttleDelay: 99, // the delay on throttle used while scrolling the page (advanced)
+  
 
   // Settings that can be overridden on per-element basis, by `data-aos-*` attributes:
   offset: 120, // offset (in px) from the original trigger point
@@ -88,6 +91,7 @@ AOS.init({
   once: false, // whether animation should happen only once - while scrolling down
   mirror: false, // whether elements should animate out while scrolling past them
   anchorPlacement: 'top-bottom', // defines which position of the element regarding to window should trigger the animation
+
 });
 ```
 
diff --git a/src/js/aos.js b/src/js/aos.js
index ddcd9f2..890af7a 100644
--- a/src/js/aos.js
+++ b/src/js/aos.js
@@ -39,7 +39,9 @@ let options = {
   animatedClassName: 'aos-animate',
   initClassName: 'aos-init',
   useClassNames: false,
-  disableMutationObserver: false
+  disableMutationObserver: false,
+  throttleDelay: 99,
+  debounceDelay: 50
 };
 
 // Detect not supported browsers (<=IE9)
@@ -59,7 +61,7 @@ const initializeScroll = function initializeScroll() {
     'scroll',
     throttle(() => {
       handleScroll($aosElements, options.once);
-    }, 99)
+    }, options.throttleDelay)
   );
 
   return $aosElements;
@@ -193,8 +195,15 @@ const init = function init(settings) {
   /**
    * Refresh plugin on window resize or orientation change
    */
-  window.addEventListener('resize', debounce(refresh, 50, true));
-  window.addEventListener('orientationchange', debounce(refresh, 50, true));
+  window.addEventListener(
+    'resize',
+    debounce(refresh, options.debounceDelay, true)
+  );
+
+  window.addEventListener(
+    'orientationchange',
+    debounce(refresh, options.debounceDelay, true)
+  );
 
   return $aosElements;
 };