diff --git a/vall_e/models/ar_nar.py b/vall_e/models/ar_nar.py
index 23bfd80..ffa1f18 100644
--- a/vall_e/models/ar_nar.py
+++ b/vall_e/models/ar_nar.py
@@ -430,7 +430,7 @@ def example_usage():
 	"""
 
 	model = AR_NAR(**kwargs).to(device)
-	steps = 200 
+	steps = 50 if cfg.model.arch_type in ["mamba","mamba2"] else 200
 
 	optimizer = cfg.hyperparameters.optimizer.lower() if cfg.yaml_path is not None else "prodigy"
 	scheduler = cfg.hyperparameters.scheduler.lower() if cfg.yaml_path is not None else ""
diff --git a/vall_e/models/base.py b/vall_e/models/base.py
index 9f381d5..19241e2 100755
--- a/vall_e/models/base.py
+++ b/vall_e/models/base.py
@@ -583,7 +583,7 @@ class Base(nn.Module):
 				d_model=d_model,
 				n_layer=n_layers*2,
 				d_intermediate=0,
-				ssm_cfg={"layer": "Mamba2", "chunk_size":64} if self.arch_type == "mamba2" else {},
+				ssm_cfg={"layer": "Mamba2"} if self.arch_type == "mamba2" else {},
 				rms_norm=True,
 				fused_add_norm=True,
 				residual_in_fp32=True,