diff --git a/js&css/web-accessible/functions.js b/js&css/web-accessible/functions.js
index 372d58777..48aad11fe 100644
--- a/js&css/web-accessible/functions.js
+++ b/js&css/web-accessible/functions.js
@@ -387,23 +387,35 @@ ImprovedTube.initPlayer = function () {
 	}
 };
 
-ImprovedTube.playerOnTimeUpdate = function () {
-	if (ImprovedTube.video_src !== this.src) {
-		ImprovedTube.video_src = this.src;
-
-		if (ImprovedTube.initialVideoUpdateDone !== true) {
-			ImprovedTube.playerQuality();
-		}
-	} else if (ImprovedTube.latestVideoDuration !== this.duration) {
-		ImprovedTube.latestVideoDuration = this.duration;
-
-		ImprovedTube.playerQuality();
-	}
-
-	ImprovedTube.alwaysShowProgressBar();
-	ImprovedTube.playerRemainingDuration();
-
-	ImprovedTube.played_time += .25;
+var timeUpdateInterval = null;
+var noTimeUpdate = null;
+
+ImprovedTube.playerOnTimeUpdate = function() {
+    var currentTime = Date.now();
+        if (!timeUpdateInterval) {
+            timeUpdateInterval = setInterval(function() {
+                if (ImprovedTube.video_src !== this.src) {
+                    ImprovedTube.video_src = this.src;
+
+                    if (ImprovedTube.initialVideoUpdateDone !== true) {
+                        ImprovedTube.playerQuality();
+                    }
+                } else if (ImprovedTube.latestVideoDuration !== this.duration) {
+                    ImprovedTube.latestVideoDuration = this.duration;
+					
+                    ImprovedTube.playerQuality();
+                }
+
+                ImprovedTube.alwaysShowProgressBar();
+                ImprovedTube.playerRemainingDuration();
+                ImprovedTube.played_time += .5;
+            }, 500);
+        }
+        clearInterval(noTimeUpdate);
+        noTimeUpdate = setTimeout(function() {
+             clearInterval(timeUpdateInterval);
+            timeUpdateInterval = null;
+        }, 987);
 };
 
 ImprovedTube.playerOnLoadedMetadata = function () {
diff --git a/js&css/web-accessible/www.youtube.com/player.js b/js&css/web-accessible/www.youtube.com/player.js
index 6fac74811..aa9ba3135 100644
--- a/js&css/web-accessible/www.youtube.com/player.js
+++ b/js&css/web-accessible/www.youtube.com/player.js
@@ -495,7 +495,7 @@ ImprovedTube.playerAutofullscreen = function () {
 QUALITY
 ------------------------------------------------------------------------------*/
 ImprovedTube.playerQuality = function (quality) {
-    if (!quality) var quality = this.storage.player_quality;
+    if (!quality) quality = this.storage.player_quality;
     if (quality && quality !== 'auto') {
         var player = this.elements.player;
         if (player && player.getAvailableQualityLevels && !player.dataset.defaultQuality) {