diff --git a/bl_types/bl_camera.py b/bl_types/bl_camera.py
index 775ee62..0eb0cba 100644
--- a/bl_types/bl_camera.py
+++ b/bl_types/bl_camera.py
@@ -28,4 +28,5 @@ class BlCamera(ReplicatedDatablock):
 bl_id = "cameras"
 bl_class = bpy.types.Camera
 bl_rep_class = BlCamera
-
+bl_delay_refresh = 1
+bl_delay_apply = 1
diff --git a/bl_types/bl_collection.py b/bl_types/bl_collection.py
index 3edc2f5..8395232 100644
--- a/bl_types/bl_collection.py
+++ b/bl_types/bl_collection.py
@@ -48,7 +48,13 @@ class BlCollection(ReplicatedDatablock):
     def resolve(self):
         assert(self.buffer)      
         self.pointer = bpy.data.collections.get(self.buffer['name'])
+    
+    def diff(self):
+        return (len(self.pointer.objects) != self.buffer['objects'] or 
+                len(self.pointer.collection.children) != self.buffer['collection']['children'])
 
 bl_id = "collections"
 bl_class = bpy.types.Collection
 bl_rep_class = BlCollection
+bl_delay_refresh = 1
+bl_delay_apply = 1
\ No newline at end of file
diff --git a/bl_types/bl_curve.py b/bl_types/bl_curve.py
index 4febd0f..26919e6 100644
--- a/bl_types/bl_curve.py
+++ b/bl_types/bl_curve.py
@@ -50,4 +50,5 @@ class BlCurve(ReplicatedDatablock):
 bl_id = "curves"
 bl_class = bpy.types.Curve
 bl_rep_class = BlCurve
-
+bl_delay_refresh = 1
+bl_delay_apply = 1
diff --git a/bl_types/bl_gpencil.py b/bl_types/bl_gpencil.py
index f8127df..2d79275 100644
--- a/bl_types/bl_gpencil.py
+++ b/bl_types/bl_gpencil.py
@@ -75,4 +75,5 @@ class BlGpencil(ReplicatedDatablock):
 bl_id = "grease_pencils"
 bl_class = bpy.types.GreasePencil
 bl_rep_class = BlGpencil
-
+bl_delay_refresh = 5
+bl_delay_apply = 5
diff --git a/bl_types/bl_image.py b/bl_types/bl_image.py
index 12823ef..5bf6958 100644
--- a/bl_types/bl_image.py
+++ b/bl_types/bl_image.py
@@ -69,4 +69,5 @@ class BlImage(ReplicatedDatablock):
 bl_id = "images"
 bl_class = bpy.types.Image
 bl_rep_class = BlImage
-
+bl_delay_refresh = 0
+bl_delay_apply = 0
diff --git a/bl_types/bl_light.py b/bl_types/bl_light.py
index f13a290..5005945 100644
--- a/bl_types/bl_light.py
+++ b/bl_types/bl_light.py
@@ -29,4 +29,5 @@ class BlLight(ReplicatedDatablock):
 bl_id = "lights"
 bl_class = bpy.types.Light
 bl_rep_class = BlLight
-
+bl_delay_refresh = 1
+bl_delay_apply = 1
diff --git a/bl_types/bl_material.py b/bl_types/bl_material.py
index 35b7f89..b95a812 100644
--- a/bl_types/bl_material.py
+++ b/bl_types/bl_material.py
@@ -80,7 +80,10 @@ class BlMaterial(ReplicatedDatablock):
         assert(self.buffer)      
         self.pointer = bpy.data.materials.get(self.buffer['name'])
 
+    def diff(self):
+        return len(self.pointer.node_tree.links) != len(self.buffer['node_tree']['links'])
 bl_id = "materials"
 bl_class = bpy.types.Material
 bl_rep_class = BlMaterial
-
+bl_delay_refresh = 1
+bl_delay_apply = 1
diff --git a/bl_types/bl_mesh.py b/bl_types/bl_mesh.py
index 039c8b2..30a129c 100644
--- a/bl_types/bl_mesh.py
+++ b/bl_types/bl_mesh.py
@@ -163,7 +163,11 @@ class BlMesh(ReplicatedDatablock):
         assert(self.buffer)      
         self.pointer = bpy.data.meshes.get(self.buffer['name'])
 
+    def diff(self):
+        return len(self.pointer.vertices) != self.buffer['verts']
+    
 bl_id = "meshes"
 bl_class = bpy.types.Mesh
 bl_rep_class = BlMesh
-
+bl_delay_refresh = 10
+bl_delay_apply = 10
diff --git a/bl_types/bl_object.py b/bl_types/bl_object.py
index 2c1e596..1b52411 100644
--- a/bl_types/bl_object.py
+++ b/bl_types/bl_object.py
@@ -72,4 +72,5 @@ class BlObject(ReplicatedDatablock):
 bl_id = "objects"
 bl_class = bpy.types.Object
 bl_rep_class = BlObject 
-
+bl_delay_refresh = 1
+bl_delay_apply = 1
diff --git a/bl_types/bl_scene.py b/bl_types/bl_scene.py
index 8dc6f8b..fe6ecda 100644
--- a/bl_types/bl_scene.py
+++ b/bl_types/bl_scene.py
@@ -54,8 +54,13 @@ class BlScene(ReplicatedDatablock):
         scene_name = self.buffer['name']
         
         self.pointer = bpy.data.scenes.get(scene_name)
+    
+    def diff(self):
+        return (len(self.pointer.collection.objects) != self.buffer['collection']['objects'] or 
+                len(self.pointer.collection.children) != self.buffer['collection']['children'])
 
 bl_id = "scenes"
 bl_class = bpy.types.Scene
 bl_rep_class = BlScene
-
+bl_delay_refresh = 1
+bl_delay_apply = 1
diff --git a/bl_types/bl_user.py b/bl_types/bl_user.py
index b748436..fd9aaa1 100644
--- a/bl_types/bl_user.py
+++ b/bl_types/bl_user.py
@@ -54,4 +54,5 @@ class BlUser(ReplicatedDatablock):
 bl_id = "users"
 bl_class = presence.User
 bl_rep_class = BlUser 
-
+bl_delay_refresh = 1
+bl_delay_apply = 1
diff --git a/delayable.py b/delayable.py
index eade3a2..eaee3c8 100644
--- a/delayable.py
+++ b/delayable.py
@@ -5,6 +5,8 @@ from . import operators, utils
 from .bl_types.bl_user import BlUser
 
 class Delayable():
+    """Delayable task interface
+    """
     def register(self):
         raise NotImplementedError
 
@@ -88,42 +90,3 @@ class ClientUpdate(Draw):
             if client:
                 client.pointer.update_location()
             
-                
-class DrawClients(Draw):
-    def __init__(self):
-        super().__init__()
-        self._camera_lines = []
-
-    def execute(self):
-        if operators.client:
-            users = operators.client.list(filter=BlUser)
-            try:    
-                self.clear_camera()
-            except:
-                pass
-
-            for u in users:
-                cli =  operators.client.get(u)
-                if cli:
-                    loc = cli.buffer['location']
-                    self.draw_camera(loc)
-                    
-    def clear_camera(self):
-        for line in self._camera_lines:
-            line.clear()
-        
-        self._camera_lines.clear()
-
-    def draw_camera(self, loc):
-        self._camera_lines.append(debug.draw_line(a=loc[0],b=loc[2]))
-        self._camera_lines.append(debug.draw_line(a=loc[1],b=loc[2]))
-        self._camera_lines.append(debug.draw_line(a=loc[3],b=loc[1]))
-        self._camera_lines.append(debug.draw_line(a=loc[3],b=loc[0]))
-
-        self._camera_lines.append(debug.draw_line(a=loc[0],b=loc[6]))
-        self._camera_lines.append(debug.draw_line(a=loc[1],b=loc[6]))
-        self._camera_lines.append(debug.draw_line(a=loc[2],b=loc[6]))
-        self._camera_lines.append(debug.draw_line(a=loc[3],b=loc[6]))
-        
-        self._camera_lines.append(debug.draw_line(a=loc[4],b=loc[5]))
-
diff --git a/operators.py b/operators.py
index 2a097f3..9b5e6b0 100644
--- a/operators.py
+++ b/operators.py
@@ -93,12 +93,11 @@ class SessionStartOperator(bpy.types.Operator):
             _type = getattr(bl_types, type)
             supported_bl_types.append(_type.bl_id)
 
-            if _type.bl_id == 'users':#For testing
-                bpy_factory.register_type(_type.bl_class, _type.bl_rep_class, timer=0.1,automatic=True)
-                delayables.append(delayable.ApplyTimer(timout=0.1,target_type=_type.bl_rep_class))
-            else:
-                bpy_factory.register_type(_type.bl_class, _type.bl_rep_class)
-
+            bpy_factory.register_type(_type.bl_class, _type.bl_rep_class, timer=_type.bl_delay_refresh,automatic=True)
+            
+            if _type.bl_delay_apply > 0:
+                delayables.append(delayable.ApplyTimer(timout=_type.bl_delay_apply,target_type=_type.bl_rep_class))
+           
         client = Client(factory=bpy_factory)
 
         if self.host:
@@ -126,8 +125,8 @@ class SessionStartOperator(bpy.types.Operator):
         )
         
         settings.user_uuid = client.add(usr)
-        # delayables.append(delayable.DrawClients())
         delayables.append(delayable.ClientUpdate(client_uuid=settings.user_uuid))
+        
         # Push all added values 
         client.push()
 
@@ -137,6 +136,7 @@ class SessionStartOperator(bpy.types.Operator):
         
         for d in delayables:
             d.register()
+            
         return {"FINISHED"}