diff --git a/README.md b/README.md
index 07087ea..6960adc 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,4 @@
 # Comfy-SaveCivitAI
  A custom node allowing to save images with CIVITAI readable datas
+
+_This version is based on use of_ [efficiency-nodes-comfyui](https://github.com/jags111/efficiency-nodes-comfyui)
diff --git a/civitai_datas.py b/civitai_datas.py
index c133f65..72b8063 100644
--- a/civitai_datas.py
+++ b/civitai_datas.py
@@ -29,7 +29,7 @@ class LoraData:
 
 
 class GenerationData:
-    def __init__(self, datas, loraNode, loaderNode, samplerNode):
+    def __init__(self, datas, loraNode, loaderNode, samplerNode, genDatas=None):
         self.preparePaths()
 
         self.loraStackerNodeID = None
@@ -38,30 +38,15 @@ class GenerationData:
         self.loraNodeName = loraNode
         self.loaderNodeName = loaderNode
         self.samplerNodeName = samplerNode
-
-        self.getNodesIds(datas)
         self.loras = []
 
-        self.getPrompts(datas)
-        self.getSettings(datas)
-        self.getModel(datas)
-        self.getVAE(datas)
-        self.getLoras(datas)
-
-        self.tiHashes = []
-
-        def __init__(self, datas, loraNode, loaderNode, samplerNode):
-            self.preparePaths()
-
-            self.loraStackerNodeID = None
-            self.efficientLoaderNodeID = None
-            self.samplerNodeID = None
-            self.loraNodeName = loraNode
-            self.loaderNodeName = loaderNode
-            self.samplerNodeName = samplerNode
+        # If previous datas, copy datas to actual one and retrieve custom seed
+        if genDatas:
+            self.__dict__ = genDatas.__dict__.copy()
+            self.seed = datas.get(self.samplerNodeID, {}).get('inputs', {}).get('seed')
 
+        else:
             self.getNodesIds(datas)
-            self.loras = []
 
             self.getPrompts(datas)
             self.getSettings(datas)
@@ -69,7 +54,8 @@ class GenerationData:
             self.getVAE(datas)
             self.getLoras(datas)
 
-            self.tiHashes = []
+        self.tiHashes = []
+
 
     def getPrompts(self, datas):
         self.positivePrompt = datas.get(self.efficientLoaderNodeID, {}).get('inputs', {}).get('positive')
@@ -197,7 +183,6 @@ class GenerationData:
             if self.samplerNodeName in datas.get(node, {}).get('class_type', {}):
                 self.samplerNodeID = node
 
-
     def __str__(self):
         has_loras = len(self.loras) > 0
 
diff --git a/save_civitai_node.py b/save_civitai_node.py
index 2d5f868..8872e9f 100644
--- a/save_civitai_node.py
+++ b/save_civitai_node.py
@@ -8,11 +8,13 @@ import json
 import os
 
 from datetime import datetime
-
 from .civitai_datas import GenerationData
 
 
 class SaveCivitai:
+
+    global FIRST_GEN
+
     def __init__(self):
         self.output_dir = folder_paths.get_output_directory()
         self.type = "output"
@@ -41,12 +43,26 @@ class SaveCivitai:
 
     CATEGORY = "MyTest"
 
-    def process_metadata(self, lora_stacker, efficient_loader, sampler, datas):
-        generated = GenerationData(datas, lora_stacker, efficient_loader, sampler)
+    # Retrieve metadatas from Images, to prevent model loading calculation at each batch images,
+    # datas are generated at first images, and copied to each next image.
+    # Only seeds will be retrieved, as it may be unique
+    def process_metadata(self, lora_stacker, efficient_loader, sampler, datas, batch_number):
+        global FIRST_GEN
+
+        if batch_number == 0:
+            print("Generating First Data")
+            FIRST_GEN = GenerationData(datas, lora_stacker, efficient_loader, sampler)
+            generated = FIRST_GEN
+
+        elif batch_number > 0 and FIRST_GEN:
+            print("Loading First Data")
+            generated = GenerationData(datas, lora_stacker, efficient_loader, sampler, FIRST_GEN)
 
         return generated.__str__()
 
+    # Save image with metadatas, retreived with the help of nodes names.
     def save_images(self, images, filename_prefix="ComfyUI", lora_stacker="LoRA Stacker", efficient_loader="Efficient Loader", sampler="KSampler", prompt=None, extra_pnginfo=None):
+        # Save location based on datetime, like on WEBUI
         filename_prefix = datetime.now().strftime("%Y-%m-%d/") + filename_prefix + self.prefix_append
         full_output_folder, filename, counter, subfolder, filename_prefix = folder_paths.get_save_image_path(
             filename_prefix, self.output_dir, images[0].shape[1], images[0].shape[0])
@@ -57,7 +73,7 @@ class SaveCivitai:
             metadata = PngInfo()
             if prompt is not None:
                 metadata.add_text("prompt", json.dumps(prompt))
-                metadata.add_text("parameters", self.process_metadata(lora_stacker, efficient_loader, sampler, prompt))
+                metadata.add_text("parameters", self.process_metadata(lora_stacker, efficient_loader, sampler, prompt, batch_number))
             if extra_pnginfo is not None:
                 for x in extra_pnginfo:
                     metadata.add_text(x, json.dumps(extra_pnginfo[x]))