diff --git a/web/skins/classic/views/js/montage.js b/web/skins/classic/views/js/montage.js
index 50972c691..742960439 100644
--- a/web/skins/classic/views/js/montage.js
+++ b/web/skins/classic/views/js/montage.js
@@ -1105,11 +1105,15 @@ $j(window).on('load', () => initPage());
 
 document.onvisibilitychange = () => {
   if (document.visibilityState === "hidden") {
-    //Stop monitors when closing or hiding page
-    for (let i = 0, length = monitorData.length; i < length; i++) {
-      monitors[i].kill();
-    }
+    TimerHideShow = clearTimeout(TimerHideShow);
+    TimerHideShow = setTimeout(function() {
+      //Stop monitors when closing or hiding page
+      for (let i = 0, length = monitorData.length; i < length; i++) {
+        monitors[i].kill();
+      }
+    }, 15*1000);
   } else {
+    TimerHideShow = clearTimeout(TimerHideShow);
     //Start monitors when show page
     for (let i = 0, length = monitorData.length; i < length; i++) {
       if (!monitors[i].started) {
@@ -1119,6 +1123,7 @@ document.onvisibilitychange = () => {
   }
 };
 
+
 /*
 window.onbeforeunload = function(e) {
   console.log('unload');
diff --git a/web/skins/classic/views/js/watch.js b/web/skins/classic/views/js/watch.js
index df7df9428..16e2d5d8a 100644
--- a/web/skins/classic/views/js/watch.js
+++ b/web/skins/classic/views/js/watch.js
@@ -24,6 +24,7 @@ var coordinateMouse = {
 };
 var leftBtnStatus = {Down: false, UpAfterDown: false};
 var updateScale = false; //Scale needs to be updated
+var TimerHideShow;
 
 /*
 This is the format of the json object sent by bootstrap-table
@@ -1407,8 +1408,11 @@ $j( window ).on("load", initPage);
 
 document.onvisibilitychange = () => {
   if (document.visibilityState === "hidden") {
-    //Stop monitor when closing or hiding page
-    monitorStream.kill();
+    TimerHideShow = clearTimeout(TimerHideShow);
+    TimerHideShow = setTimeout(function() {
+      //Stop monitor when closing or hiding page
+      monitorStream.kill();
+    }, 15*1000);
   } else {
     //Start monitor when show page
     if (!monitorStream.started) {
diff --git a/web/skins/classic/views/js/zone.js b/web/skins/classic/views/js/zone.js
index d8a1bdb92..4c3b9f317 100644
--- a/web/skins/classic/views/js/zone.js
+++ b/web/skins/classic/views/js/zone.js
@@ -7,6 +7,7 @@ var refreshBtn = $j('#refreshBtn');
 var analyseBtn = $j('#analyseBtn');
 var monitors = [];
 var analyse_frames = true;
+var TimerHideShow;
 
 function validateForm( form ) {
   var errors = [];
@@ -763,10 +764,13 @@ function Polygon_calcArea(coords) {
 
 document.onvisibilitychange = () => {
   if (document.visibilityState === "hidden") {
-    //Stop monitors when closing or hiding page
-    for (let i = 0, length = monitorData.length; i < length; i++) {
-      monitors[i].kill();
-    }
+    TimerHideShow = clearTimeout(TimerHideShow);
+    TimerHideShow = setTimeout(function() {
+      //Stop monitors when closing or hiding page
+      for (let i = 0, length = monitorData.length; i < length; i++) {
+        monitors[i].kill();
+      }
+    }, 15*1000);
   } else {
     //Start monitors when show page
     for (let i = 0, length = monitorData.length; i < length; i++) {
diff --git a/web/skins/classic/views/js/zones.js b/web/skins/classic/views/js/zones.js
index 132fb768a..0b7303cb9 100644
--- a/web/skins/classic/views/js/zones.js
+++ b/web/skins/classic/views/js/zones.js
@@ -5,6 +5,7 @@ function AddNewZone(el) {
 }
 
 var monitors = new Array();
+var TimerHideShow;
 
 function initPage() {
   for ( var i = 0, length = monitorData.length; i < length; i++ ) {
@@ -54,10 +55,13 @@ window.addEventListener('DOMContentLoaded', initPage);
 
 document.onvisibilitychange = () => {
   if (document.visibilityState === "hidden") {
-    //Stop monitors when closing or hiding page
-    for (let i = 0, length = monitorData.length; i < length; i++) {
-      monitors[i].kill();
-    }
+    TimerHideShow = clearTimeout(TimerHideShow);
+    TimerHideShow = setTimeout(function() {
+      //Stop monitors when closing or hiding page
+      for (let i = 0, length = monitorData.length; i < length; i++) {
+        monitors[i].kill();
+      }
+    }, 15*1000);
   } else {
     //Start monitors when show page
     for (let i = 0, length = monitorData.length; i < length; i++) {