diff --git a/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml b/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml
--- a/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml
+++ b/applets/systemtray/package/contents/ui/ExpandedRepresentation.qml
@@ -26,6 +26,9 @@
 Item {
     id: expandedRepresentation
 
+    //set width/height to avoid an useless Dialog resize
+    width: Layout.minimumWidth
+    height: Layout.minimumHeight
     Layout.minimumWidth: units.gridUnit * 24
     Layout.minimumHeight: units.gridUnit * 21
     Layout.preferredWidth: Layout.minimumWidth
diff --git a/applets/systemtray/package/contents/ui/main.qml b/applets/systemtray/package/contents/ui/main.qml
--- a/applets/systemtray/package/contents/ui/main.qml
+++ b/applets/systemtray/package/contents/ui/main.qml
@@ -105,6 +105,7 @@
         if (!plasmoidItemComponent) {
             plasmoidItemComponent = Qt.createComponent("items/PlasmoidItem.qml");
         }
+        //Allow the plasmoid expander to know in what window it will be
         var plasmoidContainer = plasmoidItemComponent.createObject(invisibleEntriesContainer, {"x": x, "y": y, "applet": applet});
 
         applet.parent = plasmoidContainer
@@ -114,6 +115,27 @@
         applet.width = plasmoidContainer.height
         applet.visible = true
         plasmoidContainer.visible = true
+        
+        //This is to make preloading effective, minimizes the scene changes
+        if (applet.fullRepresentationItem) {
+            applet.fullRepresentationItem.width = expandedRepresentation.width
+            applet.fullRepresentationItem.width = expandedRepresentation.height
+            applet.fullRepresentationItem.parent = preloadedStorage;
+        } else {
+            applet.fullRepresentationItemChanged.connect(function() {
+                applet.fullRepresentationItem.width = expandedRepresentation.width
+                applet.fullRepresentationItem.width = expandedRepresentation.height
+                applet.fullRepresentationItem.parent = preloadedStorage;
+            });
+        }
+    }
+
+    //being there forces the items to fully load, and they will be reparented in the popup one by one
+    Item {
+        id: preloadedStorage
+        visible: false
+        z: -1
+        
     }
 
     Containment.onAppletRemoved: {
diff --git a/applets/systemtray/systemtray.h b/applets/systemtray/systemtray.h
--- a/applets/systemtray/systemtray.h
+++ b/applets/systemtray/systemtray.h
@@ -27,6 +27,7 @@
 class QDBusPendingCallWatcher;
 class QDBusConnection;
 class QQuickItem;
+class QQuickWindow;
 class PlasmoidModel;
 
 class SystemTray : public Plasma::Containment