diff --git a/datasets/raise/benchmark_load_part_of_images.py b/datasets/raise/benchmark_load_part_of_images.py
index d4e8c37..c5a39b0 100755
--- a/datasets/raise/benchmark_load_part_of_images.py
+++ b/datasets/raise/benchmark_load_part_of_images.py
@@ -16,7 +16,10 @@ class Operation(Enum):
     SAVE = auto()
     LOAD_NPY = auto()
 
-OPERATION = Operation.LOAD_RAW
+    def __str__(self):
+        return self.name
+
+OPERATION = Operation.LOAD_NPY
 RESOLUTION = 100
 print(f'{OPERATION = }')
 if OPERATION == Operation.LOAD_NPY:
@@ -37,7 +40,7 @@ for camera in tqdm(IMAGES_CAMERAS_FOLDER, 'Camera'):
             if OPERATION == Operation.SAVE:
                 np.save(numpyFilePath, rawColorChannels)
             if OPERATION == Operation.LOAD_NPY:
-                rawColorChannels = np.load(numpyFilePath, allow_pickle = True)
+                rawColorChannels = np.load(numpyFilePath, mmap_mode = 'r', allow_pickle = True)
                 rawColorChannelsItem = rawColorChannels.item()
                 for color in Color:
-                    print(color, rawColorChannelsItem[color].mean())
\ No newline at end of file
+                    print(color, rawColorChannelsItem[color][:RESOLUTION].mean())
\ No newline at end of file