diff --git a/diffsynth/distributed/xdit_context_parallel.py b/diffsynth/distributed/xdit_context_parallel.py
index 2c1a257..4887e2f 100644
--- a/diffsynth/distributed/xdit_context_parallel.py
+++ b/diffsynth/distributed/xdit_context_parallel.py
@@ -73,9 +73,10 @@ def usp_dit_forward(self,
         return custom_forward
 
     # Context Parallel
-    x = torch.chunk(
-        x, get_sequence_parallel_world_size(),
-        dim=1)[get_sequence_parallel_rank()]
+    chunks = torch.chunk(x, get_sequence_parallel_world_size(), dim=1)
+    pad_shape = chunks[0].shape[1] - chunks[-1].shape[1]
+    chunks = [torch.nn.functional.pad(chunk, (0, 0, 0, chunks[0].shape[1]-chunk.shape[1]), value=0) for chunk in chunks]
+    x = chunks[get_sequence_parallel_rank()]
 
     for block in self.blocks:
         if self.training and use_gradient_checkpointing:
@@ -99,6 +100,7 @@ def usp_dit_forward(self,
 
     # Context Parallel
     x = get_sp_group().all_gather(x, dim=1)
+    x = x[:, :-pad_shape] if pad_shape > 0 else x
 
     # unpatchify
     x = self.unpatchify(x, (f, h, w))
diff --git a/diffsynth/pipelines/wan_video.py b/diffsynth/pipelines/wan_video.py
index 8ac1e4e..e70e0cc 100644
--- a/diffsynth/pipelines/wan_video.py
+++ b/diffsynth/pipelines/wan_video.py
@@ -594,24 +594,33 @@ def model_fn_wan_video(
     # blocks
     if use_unified_sequence_parallel:
         if dist.is_initialized() and dist.get_world_size() > 1:
-            x = torch.chunk(x, get_sequence_parallel_world_size(), dim=1)[get_sequence_parallel_rank()]
+            chunks = torch.chunk(x, get_sequence_parallel_world_size(), dim=1)
+            pad_shape = chunks[0].shape[1] - chunks[-1].shape[1]
+            chunks = [torch.nn.functional.pad(chunk, (0, 0, 0, chunks[0].shape[1]-chunk.shape[1]), value=0) for chunk in chunks]
+            x = chunks[get_sequence_parallel_rank()]
+            
     if tea_cache_update:
         x = tea_cache.update(x)
     else:
         for block_id, block in enumerate(dit.blocks):
             x = block(x, context, t_mod, freqs)
             if vace_context is not None and block_id in vace.vace_layers_mapping:
-                x = x + vace_hints[vace.vace_layers_mapping[block_id]] * vace_scale
+                current_vace_hint = vace_hints[vace.vace_layers_mapping[block_id]]
+                if use_unified_sequence_parallel and dist.is_initialized() and dist.get_world_size() > 1:
+                    current_vace_hint = torch.chunk(current_vace_hint, get_sequence_parallel_world_size(), dim=1)[get_sequence_parallel_rank()]
+                    current_vace_hint = torch.nn.functional.pad(current_vace_hint, (0, 0, 0, chunks[0].shape[1] - current_vace_hint.shape[1]), value=0)
+                x = x + current_vace_hint * vace_scale
         if tea_cache is not None:
             tea_cache.store(x)
             
-    if reference_latents is not None:
-        x = x[:, reference_latents.shape[1]:]
-        f -= 1
-
     x = dit.head(x, t)
     if use_unified_sequence_parallel:
         if dist.is_initialized() and dist.get_world_size() > 1:
             x = get_sp_group().all_gather(x, dim=1)
+            x = x[:, :-pad_shape] if pad_shape > 0 else x
+    # Remove reference latents
+    if reference_latents is not None:
+        x = x[:, reference_latents.shape[1]:]
+        f -= 1
     x = dit.unpatchify(x, (f, h, w))
     return x
diff --git a/diffsynth/pipelines/wan_video_new.py b/diffsynth/pipelines/wan_video_new.py
index e429456..2317422 100644
--- a/diffsynth/pipelines/wan_video_new.py
+++ b/diffsynth/pipelines/wan_video_new.py
@@ -1074,7 +1074,10 @@ def model_fn_wan_video(
     # blocks
     if use_unified_sequence_parallel:
         if dist.is_initialized() and dist.get_world_size() > 1:
-            x = torch.chunk(x, get_sequence_parallel_world_size(), dim=1)[get_sequence_parallel_rank()]
+            chunks = torch.chunk(x, get_sequence_parallel_world_size(), dim=1)
+            pad_shape = chunks[0].shape[1] - chunks[-1].shape[1]
+            chunks = [torch.nn.functional.pad(chunk, (0, 0, 0, chunks[0].shape[1]-chunk.shape[1]), value=0) for chunk in chunks]
+            x = chunks[get_sequence_parallel_rank()]
     if tea_cache_update:
         x = tea_cache.update(x)
     else:
@@ -1103,6 +1106,7 @@ def model_fn_wan_video(
                 current_vace_hint = vace_hints[vace.vace_layers_mapping[block_id]]
                 if use_unified_sequence_parallel and dist.is_initialized() and dist.get_world_size() > 1:
                     current_vace_hint = torch.chunk(current_vace_hint, get_sequence_parallel_world_size(), dim=1)[get_sequence_parallel_rank()]
+                    current_vace_hint = torch.nn.functional.pad(current_vace_hint, (0, 0, 0, chunks[0].shape[1] - current_vace_hint.shape[1]), value=0)
                 x = x + current_vace_hint * vace_scale
         if tea_cache is not None:
             tea_cache.store(x)
@@ -1111,6 +1115,7 @@ def model_fn_wan_video(
     if use_unified_sequence_parallel:
         if dist.is_initialized() and dist.get_world_size() > 1:
             x = get_sp_group().all_gather(x, dim=1)
+            x = x[:, :-pad_shape] if pad_shape > 0 else x
     # Remove reference latents
     if reference_latents is not None:
         x = x[:, reference_latents.shape[1]:]
diff --git a/diffsynth/utils/__init__.py b/diffsynth/utils/__init__.py
index 58733c1..97f3926 100644
--- a/diffsynth/utils/__init__.py
+++ b/diffsynth/utils/__init__.py
@@ -178,9 +178,9 @@ class ModelConfig:
                 is_folder = False
             
             # Download
+            if self.local_model_path is None:
+                self.local_model_path = "./models"
             if not skip_download:
-                if self.local_model_path is None:
-                    self.local_model_path = "./models"
                 downloaded_files = glob.glob(self.origin_file_pattern, root_dir=os.path.join(self.local_model_path, self.model_id))
                 snapshot_download(
                     self.model_id,