diff --git a/.driving_log_replayer.cspell.json b/.driving_log_replayer.cspell.json
index b9941db4..a5d49c2c 100644
--- a/.driving_log_replayer.cspell.json
+++ b/.driving_log_replayer.cspell.json
@@ -38,6 +38,7 @@
     "youtalk",
     "UMiho",
     "nuscenes",
-    "devkit"
+    "devkit",
+    "fastjsonschema"
   ]
 }
diff --git a/driving_log_replayer/driving_log_replayer/perception_eval_conversions.py b/driving_log_replayer/driving_log_replayer/perception_eval_conversions.py
index 48f1f2fb..ecb12bc2 100644
--- a/driving_log_replayer/driving_log_replayer/perception_eval_conversions.py
+++ b/driving_log_replayer/driving_log_replayer/perception_eval_conversions.py
@@ -17,12 +17,12 @@
 
 from ament_index_python.packages import get_package_share_directory
 from builtin_interfaces.msg import Time
+import fastjsonschema
 from geometry_msgs.msg import Point
 from geometry_msgs.msg import Polygon as RosPolygon
 from geometry_msgs.msg import Pose
 from geometry_msgs.msg import Quaternion as RosQuaternion
 from geometry_msgs.msg import Vector3
-import jsonschema
 import numpy as np
 from perception_eval.common import ObjectType
 from perception_eval.common.object import DynamicObject
@@ -305,25 +305,28 @@ def fill_xyzw_quat(q: Quaternion | None) -> dict:
 # utils for writing each perception frame result to a file
 class FrameDescriptionWriter:
     schema: dict = None
+    validate_func = None
 
     @classmethod
     def load_schema(cls) -> None:
-        if cls.schema is None:
+        if cls.schema is None or cls.validate_func is None:
             package_share_directory = get_package_share_directory("driving_log_replayer")
             schema_file_path = (
                 Path(package_share_directory) / "config" / "object_output_schema.json"
             )
             with schema_file_path.open() as file:
                 cls.schema = json.load(file)
+            cls.validate_func = fastjsonschema.compile(cls.schema)
 
     @classmethod
     def is_object_structure_valid(cls, objdata: dict | None) -> bool:
         cls.load_schema()
         try:
-            jsonschema.validate(objdata, cls.schema)
-        except jsonschema.exceptions.ValidationError:
+            cls.validate_func(objdata)
+        except fastjsonschema.exceptions.JsonSchemaException:
             return False
-        return True
+        else:
+            return True
 
     @staticmethod
     def object_to_description(obj: ObjectType | None) -> dict:
diff --git a/driving_log_replayer/package.xml b/driving_log_replayer/package.xml
index f7cd092a..92816277 100644
--- a/driving_log_replayer/package.xml
+++ b/driving_log_replayer/package.xml
@@ -38,7 +38,7 @@
   <exec_depend>driving_log_replayer_analyzer</exec_depend>
   <exec_depend>lanelet2_extension_python</exec_depend>
   <exec_depend>perception_eval</exec_depend>
-  <exec_depend>python3-jsonschema</exec_depend>
+  <exec_depend>python3-fastjsonschema</exec_depend>
   <exec_depend>python3-pandas</exec_depend>
   <exec_depend>python3-simplejson</exec_depend>
   <exec_depend>python3-termcolor</exec_depend>