diff --git a/drevalpy/experiment.py b/drevalpy/experiment.py
index 2df1135..d64d55c 100644
--- a/drevalpy/experiment.py
+++ b/drevalpy/experiment.py
@@ -919,26 +919,28 @@ def train_and_predict(
             early_stopping_dataset.transform(response_transformation)
         prediction_dataset.transform(response_transformation)
 
-    train_inputs = {
-        "output": train_dataset,
-        "cell_line_input": cl_features,
-        "drug_input": drug_features,
-        "output_earlystopping": early_stopping_dataset,
-    }
-
+    print("Training model ...")
     if model_checkpoint_dir == "TEMPORARY":
         with tempfile.TemporaryDirectory() as temp_dir:
             print(f"Using temporary directory: {temp_dir} for model checkpoints")
-            train_inputs["model_checkpoint_dir"] = temp_dir
-            print("Training model ...")
-            model.train(**train_inputs)
+            model.train(
+                output=train_dataset,
+                output_earlystopping=early_stopping_dataset,
+                cell_line_input=cl_features,
+                drug_input=drug_features,
+                model_checkpoint_dir=model_checkpoint_dir,
+            )
     else:
         if not os.path.exists(model_checkpoint_dir):
             os.makedirs(model_checkpoint_dir, exist_ok=True)
         print(f"Using directory: {model_checkpoint_dir} for model checkpoints")
-        train_inputs["model_checkpoint_dir"] = model_checkpoint_dir
-        print("Training model ...")
-        model.train(**train_inputs)
+        model.train(
+            output=train_dataset,
+            output_earlystopping=early_stopping_dataset,
+            cell_line_input=cl_features,
+            drug_input=drug_features,
+            model_checkpoint_dir=model_checkpoint_dir,
+        )
 
     if len(prediction_dataset) > 0:
         prediction_dataset._predictions = model.predict(
diff --git a/drevalpy/models/SimpleNeuralNetwork/simple_neural_network.py b/drevalpy/models/SimpleNeuralNetwork/simple_neural_network.py
index 9f93c4e..4df6f8e 100644
--- a/drevalpy/models/SimpleNeuralNetwork/simple_neural_network.py
+++ b/drevalpy/models/SimpleNeuralNetwork/simple_neural_network.py
@@ -102,7 +102,7 @@ def train(
                 output_earlystopping=output_earlystopping,
                 batch_size=16,
                 patience=5,
-                num_workers=1,
+                num_workers=8,
                 model_checkpoint_dir=model_checkpoint_dir,
             )
 
diff --git a/drevalpy/models/SimpleNeuralNetwork/utils.py b/drevalpy/models/SimpleNeuralNetwork/utils.py
index cb55549..9209ed7 100644
--- a/drevalpy/models/SimpleNeuralNetwork/utils.py
+++ b/drevalpy/models/SimpleNeuralNetwork/utils.py
@@ -1,6 +1,5 @@
 """Utility functions for the simple neural network models."""
 
-import os
 import secrets
 from typing import Any
 
@@ -187,7 +186,7 @@ def fit(
 
         if trainer_params is None:
             trainer_params = {
-                "progress_bar_refresh_rate": 300,
+                "progress_bar_refresh_rate": 500,
                 "max_epochs": 70,
             }
 
@@ -252,8 +251,8 @@ def fit(
                 self.checkpoint_callback,
                 progress_bar,
             ],
-            default_root_dir=os.path.join(model_checkpoint_dir, "nn_baseline_checkpoints/lightning_logs/" + name),
-            strategy="ddp_find_unused_parameters_true",
+            default_root_dir=model_checkpoint_dir,
+            devices=1,
             **trainer_params_copy,
         )
         if val_loader is None:
@@ -265,6 +264,8 @@ def fit(
         if self.checkpoint_callback.best_model_path is not None:
             checkpoint = torch.load(self.checkpoint_callback.best_model_path)  # noqa: S614
             self.load_state_dict(checkpoint["state_dict"])
+        else:
+            print("checkpoint_callback: No best model found, using the last model.")
 
     def forward(self, x) -> torch.Tensor:
         """