From 5a8f8730bd768e878d7b2ade4c8d022fbf238c8e Mon Sep 17 00:00:00 2001
From: kijai <40791699+kijai@users.noreply.github.com>
Date: Tue, 19 Aug 2025 13:31:56 +0300
Subject: [PATCH 1/2] Fix for using additional scaled model and merging loras

---
 utils.py | 11 +++++++++++
 1 file changed, 11 insertions(+)

diff --git a/utils.py b/utils.py
index 95430f7..d824fec 100644
--- a/utils.py
+++ b/utils.py
@@ -208,6 +208,17 @@ def apply_lora(model, device_to, transformer_load_device, params_to_keep=None, d
                         continue
             m.comfy_patched_weights = True
             pbar.update(1)
+        
+        # After LoRA patching, scale weights that have scale_weight but are NOT LoRA patched
+        if len(scale_weights) > 0:
+            for name, param in model.model.diffusion_model.named_parameters():
+                scale_key = name.replace("weight", "scale_weight").replace("diffusion_model.", "") if "weight" in name else None
+                full_param_name = f"diffusion_model.{name}"
+                if scale_key and scale_key in scale_weights and full_param_name not in model.patches:
+                    scale = scale_weights[scale_key]
+                    param_fp32 = param.to(torch.float32)
+                    param_fp32.mul_(scale.to(param.device, torch.float32))
+                    param.copy_(param_fp32.to(param.dtype))
       
         model.current_weight_patches_uuid = model.patches_uuid
         if low_mem_load:

From 4f9ef5b7a96729545ffb828b16e01b954c20c597 Mon Sep 17 00:00:00 2001
From: kijai <40791699+kijai@users.noreply.github.com>
Date: Tue, 19 Aug 2025 13:34:56 +0300
Subject: [PATCH 2/2] Update nodes.py

---
 nodes.py | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/nodes.py b/nodes.py
index 7a65367..2cd0dad 100644
--- a/nodes.py
+++ b/nodes.py
@@ -3005,6 +3005,8 @@ class WanVideoSampler:
                         frame_num = clip_length = image_embeds.get("num_frames", 81)
                         vae = image_embeds.get("vae", None)
                         clip_embeds = image_embeds.get("clip_context", None)
+                        if clip_embeds is not None:
+                            clip_embeds = clip_embeds.to(dtype)
                         colormatch = image_embeds.get("colormatch", "disabled")
                         motion_frame = image_embeds.get("motion_frame", 25)
                         target_w = image_embeds.get("target_w", None)
@@ -3196,7 +3198,7 @@ class WanVideoSampler:
                                     cfg[idx], 
                                     text_embeds["prompt_embeds"], 
                                     text_embeds["negative_prompt_embeds"], 
-                                    timestep, idx, y.squeeze(0), clip_embeds.to(dtype), control_latents, vace_data, unianim_data, audio_proj, control_camera_latents, add_cond,
+                                    timestep, idx, y.squeeze(0), clip_embeds, control_latents, vace_data, unianim_data, audio_proj, control_camera_latents, add_cond,
                                     cache_state=self.cache_state, multitalk_audio_embeds=audio_embs)
 
                                 if callback is not None: