diff --git a/examples/pxScene2d/external/westeros-stub/westeros-compositor.h b/examples/pxScene2d/external/westeros-stub/westeros-compositor.h
index a9dff7f31a..1488087cbc 100644
--- a/examples/pxScene2d/external/westeros-stub/westeros-compositor.h
+++ b/examples/pxScene2d/external/westeros-stub/westeros-compositor.h
@@ -44,6 +44,10 @@ typedef enum _WstClient_status
    WstClient_stoppedAbnormal,
    WstClient_connected,
    WstClient_disconnected
+#ifdef WESTEROS_FIRST_FRAME_SUPPORTED
+   , WstClient_firstFrame
+#endif //WESTEROS_FIRST_FRAME_SUPPORTED
+
 } WstClient_status;
 
 typedef enum _WstHints
diff --git a/examples/pxScene2d/src/pxWayland.cpp b/examples/pxScene2d/src/pxWayland.cpp
index 18c8edb4b3..ff9fc4377d 100644
--- a/examples/pxScene2d/src/pxWayland.cpp
+++ b/examples/pxScene2d/src/pxWayland.cpp
@@ -535,6 +535,11 @@ void pxWayland::handleClientStatus( int status, int pid, int detail )
          case WstClient_disconnected:
             mEvents->clientDisconnected( pid );
             break;
+#ifdef WESTEROS_FIRST_FRAME_SUPPORTED
+         case WstClient_firstFrame:
+             mEvents->firstFrameRendered( pid );
+             break;
+#endif //WESTEROS_FIRST_FRAME_SUPPORTED
          default:
             rtLogError("unexpected wayland client status type");
             break;
diff --git a/examples/pxScene2d/src/pxWayland.h b/examples/pxScene2d/src/pxWayland.h
index 03663db250..d5caca371f 100644
--- a/examples/pxScene2d/src/pxWayland.h
+++ b/examples/pxScene2d/src/pxWayland.h
@@ -50,6 +50,7 @@ class pxWaylandEvents {
   virtual void isReady( bool /*ready*/ ) {}
   virtual void isRemoteReady( bool /*ready*/ ) {}
   virtual void remoteDisconnected(void * /*data*/ ) {}
+  virtual void firstFrameRendered( int /*pid*/ ) {}
 };
 
 class pxWayland: public pxIView {
diff --git a/examples/pxScene2d/src/pxWaylandContainer.cpp b/examples/pxScene2d/src/pxWaylandContainer.cpp
index 144cddb751..95d7ab1b65 100644
--- a/examples/pxScene2d/src/pxWaylandContainer.cpp
+++ b/examples/pxScene2d/src/pxWaylandContainer.cpp
@@ -56,6 +56,7 @@ pxWaylandContainer::pxWaylandContainer(pxScene2d* scene)
   addListener("onClientStopped", get<rtFunctionRef>("onClientStopped"));
   addListener("onClientConnected", get<rtFunctionRef>("onClientConnected"));
   addListener("onClientDisconnected", get<rtFunctionRef>("onClientDisconnected"));
+  addListener("onFirstFrameRendered", get<rtFunctionRef>("onFirstFrameRendered"));
   mRemoteReady = new rtPromise();
 }
 
@@ -119,6 +120,17 @@ void pxWaylandContainer::clientDisconnected( int pid )
    mEmit.send("onClientDisconnected", e);
 }
 
+void pxWaylandContainer::firstFrameRendered( int pid )
+{
+    mClientPID= pid;
+
+    rtObjectRef e = new rtMapObject;
+    e.set("name", "onFirstFrameRendered");
+    e.set("target", this);
+    e.set("pid", pid );
+    mEmit.send("onFirstFrameRendered", e);
+}
+
 void pxWaylandContainer::clientStoppedNormal( int pid, int exitCode )
 {
    mClientPID= -1;
diff --git a/examples/pxScene2d/src/pxWaylandContainer.h b/examples/pxScene2d/src/pxWaylandContainer.h
index 2ce61565fa..da441ae268 100644
--- a/examples/pxScene2d/src/pxWaylandContainer.h
+++ b/examples/pxScene2d/src/pxWaylandContainer.h
@@ -56,6 +56,7 @@ class pxWaylandContainer: public pxViewContainer, pxWaylandEvents {
   virtual void isRemoteReady(bool ready);
   virtual void remoteDisconnected(void * data);
   virtual void sendPromise();
+  virtual void firstFrameRendered( int pid );
 
   rtError displayName(rtString& s) const;
   rtError setDisplayName(const char* s);
diff --git a/examples/pxScene2d/src/rcvrcore/optimus.js b/examples/pxScene2d/src/rcvrcore/optimus.js
index c27eb97c1a..7a0f6f26a6 100644
--- a/examples/pxScene2d/src/rcvrcore/optimus.js
+++ b/examples/pxScene2d/src/rcvrcore/optimus.js
@@ -658,6 +658,10 @@ function Application(props) {
     _externalApp.on("onClientConnected", function () { _this.log("onClientConnected"); }); // is never called
     _externalApp.on("onClientDisconnected", function () { _this.log("onClientDisconnected"); }); // is never called
     _externalApp.on("onClientStopped", function () { _this.log( "onClientStopped"); }); // is never called
+    _externalApp.on("onFirstFrameRendered", function () {
+      _this.log( "onFirstFrameRendered");
+      _this.applicationFirstFrameRendered();
+    }); // is never called
     _externalApp.ready.then(function() {
       _this.log("successfully created Spark app: " + _this.id);
       _readyBaseResolve();
@@ -695,6 +699,10 @@ function Application(props) {
     _externalApp.on("onClientStarted", function () { _this.log("onClientStarted"); });
     _externalApp.on("onClientConnected", function () { _this.log("onClientConnected"); });
     _externalApp.on("onClientDisconnected", function () { _this.log("onClientDisconnected"); }); // called on client crash
+    _externalApp.on("onFirstFrameRendered", function () {
+      _this.log( "onFirstFrameRendered");
+      _this.applicationFirstFrameRendered();
+    });
     _externalApp.on("onClientStopped", function () { // called on client crash
       _this.log("onClientStopped");
       setTimeout(function () {
@@ -739,6 +747,10 @@ function Application(props) {
     _externalApp.on("onClientConnected", function () { _this.log("onClientConnected"); });
     _externalApp.on("onClientDisconnected", function () { _this.log("onClientDisconnected"); });
     _externalApp.on("onClientStopped", function () { _this.log("onClientStopped"); });
+    _externalApp.on("onFirstFrameRendered", function () {
+       _this.log( "onFirstFrameRendered");
+       _this.applicationFirstFrameRendered();
+    });
     _externalApp.remoteReady.then(function(obj) {
       if(obj) {
         _this.log("about to create browser window");
@@ -803,6 +815,10 @@ function Application(props) {
     _externalApp.on("onClientStarted", function () { _this.log("onClientStarted"); });
     _externalApp.on("onClientConnected", function () { _this.log("onClientConnected"); });
     _externalApp.on("onClientDisconnected", function () { _this.log("onClientDisconnected"); }); // called on client crash
+    _externalApp.on("onFirstFrameRendered", function () {
+       _this.log( "onFirstFrameRendered");
+       _this.applicationFirstFrameRendered();
+    });
     _externalApp.on("onClientStopped", function () { // called on client crash
       _this.log("onClientStopped");
       setTimeout(function () {
@@ -905,6 +921,10 @@ Application.prototype.applicationDestroyed = function(){
   this.log("applicationDestroyed");
   appManager.onDestroy(this);
 };
+Application.prototype.applicationFirstFrameRendered = function(){
+  this.log("applicationFirstFrameRendered");
+  appManager.onFirstFrameRendered(this);
+};
 
 function Optimus() {
 
@@ -1011,6 +1031,10 @@ function Optimus() {
   this.onReady = function(app){
     notifyListeners("ready",app);
   };
+  this.onFirstFrameRendered = function(app){
+    notifyListeners("firstFrameRendered",app);
+  };
+
   this.setScene = function(s){
     scene = s;
     // remove reference to scene by passing null