diff --git a/core/config.class.inc.php b/core/config.class.inc.php
index 7debcbd80..c887a7a76 100644
--- a/core/config.class.inc.php
+++ b/core/config.class.inc.php
@@ -838,6 +838,14 @@ class Config
 			'source_of_value' => '',
 			'show_in_conf_sample' => false,
 		),
+		'impact_analysis_lazy_loading' => [
+			'type'                => 'bool',
+			'description'         => 'In the impact analysis view: display the analysis or filter before display',
+			'default'             => false,
+			'value'               => '',
+			'source_of_value'     => '',
+			'show_in_conf_sample' => false,
+		],
 		'url_validation_pattern' => array(
 			'type' => 'string',
 			'description' => 'Regular expression to validate/detect the format of an URL (URL attributes and Wiki formatting for Text attributes)',
diff --git a/core/displayablegraph.class.inc.php b/core/displayablegraph.class.inc.php
index 06b405543..25513f4c5 100644
--- a/core/displayablegraph.class.inc.php
+++ b/core/displayablegraph.class.inc.php
@@ -1435,79 +1435,20 @@ class DisplayableGraph extends SimpleGraph
 	 * @throws \CoreException
 	 * @throws \DictExceptionMissingString
 	 */
-	function Display(WebPage $oP, $aResults, $sRelation, ApplicationContext $oAppContext, $aExcludedObjects, $sObjClass, $iObjKey, $sContextKey, $aContextParams = array())
-	{	
-		$aContextDefs = static::GetContextDefinitions($sContextKey, true, $aContextParams);
-		$aExcludedByClass = array();
-		foreach($aExcludedObjects as $oObj)
-		{
-			if (!array_key_exists(get_class($oObj), $aExcludedByClass))
-			{
-				$aExcludedByClass[get_class($oObj)] = array();
-			}
-			$aExcludedByClass[get_class($oObj)][] = $oObj->GetKey();
-		}
-		$sSftShort = Dict::S('UI:ElementsDisplayed');
-		$sSearchToggle = Dict::S('UI:Search:Toggle');
-		$oP->add("<div class=\"not-printable\">\n");
-		$oP->add(
-<<<EOF
- <div id="ds_flash" class="search_box">
-	<form id="dh_flash" class="search_form_handler closed">
-	<h2 class="sf_title"><span class="sft_long">$sSftShort</span><span class="sft_short">$sSftShort</span><span class="sft_toggler fas fa-caret-down pull-right" title="$sSearchToggle"></span></h2>
-	<div id="dh_flash_criterion_outer" class="sf_criterion_area"><div class="sf_criterion_row">
-EOF
-		);
-		
-		$oP->add_ready_script(
-<<<EOF
-	$("#dh_flash > .sf_title").click( function() {
-		$("#dh_flash").toggleClass('closed');
-	});
-    $('#ReloadMovieBtn').button().button('disable');
-EOF
-		);
-		$aSortedElements = array();
-		foreach($aResults as $sClassIdx => $aObjects)
-		{
-			foreach($aObjects as $oCurrObj)
-			{
-				$sSubClass = get_class($oCurrObj);
-				$aSortedElements[$sSubClass] = MetaModel::GetName($sSubClass);
-			}
-		}
-				
-		asort($aSortedElements);
-		$idx = 0;
-		foreach($aSortedElements as $sSubClass => $sClassName)
-		{
-			$oP->add("<span style=\"padding-right:2em; white-space:nowrap;\"><input type=\"checkbox\" id=\"exclude_$idx\" name=\"excluded[]\" value=\"$sSubClass\" checked onChange=\"$('#ReloadMovieBtn').button('enable')\"><label for=\"exclude_$idx\">&nbsp;".MetaModel::GetClassIcon($sSubClass)."&nbsp;$sClassName</label></span> ");
-			$idx++;
-		}
-		$oP->add("<p style=\"text-align:right\"><button type=\"button\" id=\"ReloadMovieBtn\" onClick=\"DoReload()\">".Dict::S('UI:Button:Refresh')."</button></p>");
-		$oP->add("</div></div></form>");
-		$oP->add("</div>\n");
-	 	$oP->add("</div>\n"); // class="not-printable"
-
-		$aAdditionalContexts = array();
-		foreach($aContextDefs as $sKey => $aDefinition)
-		{
-			$aAdditionalContexts[] = array('key' => $sKey, 'label' => Dict::S($aDefinition['dict']), 'oql' => $aDefinition['oql'], 'default' => (array_key_exists('default', $aDefinition)  && ($aDefinition['default'] == 'yes')));
-		}
-		
-		$sDirection = utils::ReadParam('d', 'horizontal');
+	function Display(WebPage $oP, $aResults, $sRelation, ApplicationContext $oAppContext, $aExcludedObjects, $sObjClass, $iObjKey, $sContextKey, $aContextParams = array(), $sLazyLoading = false)
+	{
+		list($aExcludedByClass, $aAdditionalContexts) = $this->DisplayFiltering($sContextKey, $aContextParams, $aExcludedObjects, $oP, $aResults, $sLazyLoading);
 		$iGroupingThreshold = utils::ReadParam('g', 5);
-	
+
 		$oP->add_linked_script(utils::GetAbsoluteUrlAppRoot().'js/fraphael.js');
 		$oP->add_linked_stylesheet(utils::GetAbsoluteUrlAppRoot().'css/jquery.contextMenu.css');
 		$oP->add_linked_script(utils::GetAbsoluteUrlAppRoot().'js/jquery.contextMenu.js');
 		$oP->add_linked_script(utils::GetAbsoluteUrlAppRoot().'js/simple_graph.js');
+
 		try
 		{
 			$this->InitFromGraphviz();
-			$sExportAsPdfURL = '';
 			$sExportAsPdfURL = utils::GetAbsoluteUrlAppRoot().'pages/ajax.render.php?operation=relation_pdf&relation='.$sRelation.'&direction='.($this->bDirectionDown ? 'down' : 'up');
-			$oAppcontext = new ApplicationContext();
 			$sContext = $oAppContext->GetForLink();
 			$sDrillDownURL = utils::GetAbsoluteUrlAppRoot().'pages/UI.php?operation=details&class=%1$s&id=%2$s&'.$sContext;
 			$sExportAsDocumentURL = utils::GetAbsoluteUrlAppRoot().'pages/ajax.render.php?operation=relation_attachment&relation='.$sRelation.'&direction='.($this->bDirectionDown ? 'down' : 'up');
@@ -1586,7 +1527,14 @@ EOF
 				// Export as Attachment requires GD (for building the PDF) AND a valid objclass/objkey couple
 				unset($aParams['export_as_attachment']);
 			}
-			$oP->add_ready_script("$('#$sId').simple_graph(".json_encode($aParams).");");
+			if ($oP->IsPrintableVersion() || !$sLazyLoading) {
+				$oP->add_ready_script(" $('#$sId').simple_graph(".json_encode($aParams).");");
+			} else {
+				$oP->add_script("function Load(){var aExcluded = [];	$('input[name^=excluded]').each( function() {if (!$(this).prop('checked'))	{	aExcluded.push($(this).val());		}} ); var params= $.extend(".json_encode($aParams).",  {excluded_classes: aExcluded}); $('#$sId').simple_graph(params);}");
+				$oP->add_ready_script("$('#impacted_objects_lists').html('".Dict::S('Relation:impacts/NoFilteredData')."');$('#impacted_groups').html('".Dict::S('Relation:impacts/NoFilteredData')."');");
+
+			}
+
 		}
 		catch(Exception $e)
 		{
@@ -1618,5 +1566,86 @@ EOF
 EOF
 		);
 	}
+
+	/**
+	 * @param $sContextKey
+	 * @param array $aContextParams
+	 * @param array $aExcludedObjects
+	 * @param \WebPage $oP
+	 * @param array $aResults
+	 * @param bool $sLazyLoading
+	 *
+	 * @return array
+	 * @throws \CoreException
+	 * @throws \DictExceptionMissingString
+	 * @since 2.7.7 & 3.0.1
+	 */
+	protected function DisplayFiltering($sContextKey, $aContextParams, $aExcludedObjects, $oP, $aResults, $sLazyLoading)
+	{
+		$aContextDefs = static::GetContextDefinitions($sContextKey, true, $aContextParams);
+		$aExcludedByClass = array();
+		foreach ($aExcludedObjects as $oObj) {
+			if (!array_key_exists(get_class($oObj), $aExcludedByClass)) {
+				$aExcludedByClass[get_class($oObj)] = array();
+			}
+			$aExcludedByClass[get_class($oObj)][] = $oObj->GetKey();
+		}
+		$sSftShort = Dict::S('UI:ElementsDisplayed');
+		$sSearchToggle = Dict::S('UI:Search:Toggle');
+		$oP->add("<div class=\"not-printable\">\n");
+		$oP->add(
+			<<<EOF
+ <div id="ds_flash" class="search_box">
+	<form id="dh_flash" class="search_form_handler">
+	<h2 class="sf_title"><span class="sft_long">$sSftShort</span><span class="sft_short">$sSftShort</span><span class="sft_toggler fas fa-caret-down pull-right" title="$sSearchToggle"></span></h2>
+	<div id="dh_flash_criterion_outer" class="sf_criterion_area"><div class="sf_criterion_row">
+EOF
+		);
+
+		$oP->add_ready_script(
+			<<<EOF
+	$("#dh_flash > .sf_title").click( function() {
+		$("#dh_flash").toggleClass('closed');
+	});
+    $('#ReloadMovieBtn').button().button('disable');
+EOF
+		);
+		if ($sLazyLoading) {
+			$oP->add_ready_script("$('#ReloadMovieBtn').button('enable');");
+		} else {
+			$oP->add_ready_script("$('#dh_flash').addClass('closed');");
+		}
+		$aSortedElements = array();
+		foreach ($aResults as $sClassIdx => $aObjects) {
+			foreach ($aObjects as $oCurrObj) {
+				$sSubClass = get_class($oCurrObj);
+				$aSortedElements[$sSubClass] = MetaModel::GetName($sSubClass);
+			}
+		}
+
+		asort($aSortedElements);
+		$idx = 0;
+		foreach ($aSortedElements as $sSubClass => $sClassName) {
+			$oP->add("<span style=\"padding-right:2em; white-space:nowrap;\"><input type=\"checkbox\" id=\"exclude_$idx\" name=\"excluded[]\" value=\"$sSubClass\" checked onChange=\"$('#ReloadMovieBtn').button('enable')\"><label for=\"exclude_$idx\">&nbsp;".MetaModel::GetClassIcon($sSubClass)."&nbsp;$sClassName</label></span> ");
+			$idx++;
+		}
+		if ($sLazyLoading) {
+			$sOnCLick = "Load(); $('#ReloadMovieBtn').attr('onclick','DoReload()');$('#ReloadMovieBtn').html('".Dict::S('UI:Button:Refresh')."');";
+			$oP->add("<p style=\"text-align:right\"><button type=\"button\" id=\"ReloadMovieBtn\" onClick=\"$sOnCLick\">".Dict::S('Relation:impacts/LoadData')."</button></p>");
+		} else {
+			$sOnCLick = "DoReload()";
+			$oP->add("<p style=\"text-align:right\"><button type=\"button\" id=\"ReloadMovieBtn\" onClick=\"$sOnCLick\">".Dict::S('UI:Button:Refresh')."</button></p>");
+		}
+		$oP->add("</div></div></form>");
+		$oP->add("</div>\n");
+		$oP->add("</div>\n"); // class="not-printable"
+
+		$aAdditionalContexts = array();
+		foreach ($aContextDefs as $sKey => $aDefinition) {
+			$aAdditionalContexts[] = array('key' => $sKey, 'label' => Dict::S($aDefinition['dict']), 'oql' => $aDefinition['oql'], 'default' => (array_key_exists('default', $aDefinition) && ($aDefinition['default'] == 'yes')));
+		}
+
+		return array($aExcludedByClass, $aAdditionalContexts);
+	}
 	
 }
diff --git a/datamodels/2.x/itop-config-mgmt/en.dict.itop-config-mgmt.php b/datamodels/2.x/itop-config-mgmt/en.dict.itop-config-mgmt.php
index b2e3139d6..0b5735fa9 100755
--- a/datamodels/2.x/itop-config-mgmt/en.dict.itop-config-mgmt.php
+++ b/datamodels/2.x/itop-config-mgmt/en.dict.itop-config-mgmt.php
@@ -36,6 +36,8 @@ Dict::Add('EN US', 'English', 'English', array(
 	'Relation:depends on/Description' => 'Elements impacting',
 	'Relation:depends on/DownStream' => 'Depends on...',
 	'Relation:depends on/UpStream' => 'Impacts...',
+	'Relation:impacts/LoadData'       => 'Load data',
+	'Relation:impacts/NoFilteredData' => 'please select objects in Graphical view tag',
 ));
 
 
diff --git a/datamodels/2.x/itop-config-mgmt/fr.dict.itop-config-mgmt.php b/datamodels/2.x/itop-config-mgmt/fr.dict.itop-config-mgmt.php
index 60d9bb67e..7dd80cab1 100755
--- a/datamodels/2.x/itop-config-mgmt/fr.dict.itop-config-mgmt.php
+++ b/datamodels/2.x/itop-config-mgmt/fr.dict.itop-config-mgmt.php
@@ -32,6 +32,8 @@ Dict::Add('FR FR', 'French', 'Français', array(
 	'Relation:depends on/Description' => 'Eléments dont dépend',
 	'Relation:depends on/DownStream' => 'Dépend de...',
 	'Relation:depends on/UpStream' => 'Impacte...',
+	'Relation:impacts/LoadData'       => 'Charger les données',
+	'Relation:impacts/NoFilteredData' => 'Veuillez sélectionner des objets dans l\'onglet Graph',
 ));
 
 
diff --git a/js/simple_graph.js b/js/simple_graph.js
index 96210d684..f633ec210 100644
--- a/js/simple_graph.js
+++ b/js/simple_graph.js
@@ -722,18 +722,25 @@ $(function()
 			}
 			if (oData.lists)
 			{
-				this.refresh_lists(oData.lists);
+				if (this.options.excluded_classes.length > 0) {
+					var newList = {};
+					$.each(oData.lists, function (index, listId) {
+						if (me.options.excluded_classes.indexOf(index) < 0) {
+							newList[index] = listId;
+						}
+					});
+					me.refresh_lists(newList);
+				} else {
+					me.refresh_lists(oData.lists);
+				}
 			}
-			if (this.element.is(':visible'))
-			{
-				this._updateBBox();
-				this.auto_scale();
-				this._reset_pan_and_zoom();
-				this.draw();
-			}
-			else
-			{
-				this.bRedrawNeeded = true;
+			if (me.element.is(':visible')) {
+				me._updateBBox();
+				me.auto_scale();
+				me._reset_pan_and_zoom();
+				me.draw();
+			} else {
+				me.bRedrawNeeded = true;
 			}
 		},
 		refresh_groups: function(aGroups)
diff --git a/pages/UI.php b/pages/UI.php
index cb66fb0e0..6535f389d 100644
--- a/pages/UI.php
+++ b/pages/UI.php
@@ -287,6 +287,16 @@ function DisplayMultipleSelectionForm($oP, $oFilter, $sNextOperation, $oChecker,
 		$oP->add_ready_script("$('#1 table.listResults').trigger('check_all');");
 }
 
+/**
+ * @param $oP
+ * @param $aResults
+ * @param $sRelation
+ * @param $sDirection
+ * @param $oObj
+ * for operation :  'swf_navigator'
+ *
+ * @throws \DictExceptionMissingString
+ */
 function DisplayNavigatorListTab($oP, $aResults, $sRelation, $sDirection, $oObj)
 {
 	$oP->SetCurrentTab('UI:RelationshipList');
@@ -299,22 +309,7 @@ function DisplayNavigatorListTab($oP, $aResults, $sRelation, $sDirection, $oObj)
 	$oP->add("<h1>".MetaModel::GetRelationDescription($sOldRelation).' '.$oObj->GetName()."</h1>\n");
 	$oP->add("<div id=\"impacted_objects_lists\">");
 	$oP->add('<img src="../images/indicator.gif">');
-	/*
-	 * Content is rendered asynchronously via pages/ajax.render.php?operation=relation_lists
-	 */
-	/*
-	$iBlock = 1; // Zero is not a valid blockid
-	foreach($aResults as $sListClass => $aObjects)
-	{
-		$oSet = CMDBObjectSet::FromArray($sListClass, $aObjects);
-		$oP->add("<div class=\"page_header\">\n");
-		$oP->add("<h2>".MetaModel::GetClassIcon($sListClass)."&nbsp;<span class=\"hilite\">".Dict::Format('UI:Search:Count_ObjectsOf_Class_Found', count($aObjects), Metamodel::GetName($sListClass))."</h2>\n");
-		$oP->add("</div>\n");
-		$oBlock = DisplayBlock::FromObjectSet($oSet, 'list');
-		$oBlock->Display($oP, $iBlock++, array('table_id' => get_class($oObj).'_'.$sRelation.'_'.$sDirection.'_'.$sListClass));
-		$oP->P('&nbsp;'); // Some space ?				
-	}
-	*/
+
 	$oP->add("</div>");
 	$oP->add("</div>");
 }
@@ -1903,6 +1898,7 @@ EOF
 		$oP->SetCurrentTabContainer('Navigator');
 		
 		$sFirstTab = MetaModel::GetConfig()->Get('impact_analysis_first_tab');
+		$sLazyLoading = MetaModel::GetConfig()->Get('impact_analysis_lazy_loading');
 		$sContextKey = "itop-config-mgmt/relation_context/$sClass/$sRelation/$sDirection";
 		
 		// Check if the current object supports Attachments, similar to AttachmentPlugin::IsTargetObject
@@ -1926,13 +1922,13 @@ EOF
 		{
 			DisplayNavigatorListTab($oP, $aResults, $sRelation, $sDirection, $oObj);
 			$oP->SetCurrentTab('UI:RelationshipGraph');
-			$oDisplayGraph->Display($oP, $aResults, $sRelation, $oAppContext, array(), $sClassForAttachment, $iIdForAttachment, $sContextKey, array('this' => $oObj));
+			$oDisplayGraph->Display($oP, $aResults, $sRelation, $oAppContext, array(), $sClassForAttachment, $iIdForAttachment, $sContextKey, array('this' => $oObj),$sLazyLoading);
 			DisplayNavigatorGroupTab($oP);
 		}
 		else
 		{
 			$oP->SetCurrentTab('UI:RelationshipGraph');
-			$oDisplayGraph->Display($oP, $aResults, $sRelation, $oAppContext, array(), $sClassForAttachment, $iIdForAttachment, $sContextKey, array('this' => $oObj));
+			$oDisplayGraph->Display($oP, $aResults, $sRelation, $oAppContext, array(), $sClassForAttachment, $iIdForAttachment, $sContextKey, array('this' => $oObj),$sLazyLoading);
 			DisplayNavigatorListTab($oP, $aResults, $sRelation, $sDirection, $oObj);
 			DisplayNavigatorGroupTab($oP);
 		}