diff --git a/UnityPy/helpers/TypeTreeNode.py b/UnityPy/helpers/TypeTreeNode.py
index 3f4c82a4..704ee108 100644
--- a/UnityPy/helpers/TypeTreeNode.py
+++ b/UnityPy/helpers/TypeTreeNode.py
@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 import re
+from functools import cache
 from struct import Struct
 from threading import Lock
 from typing import (
@@ -37,10 +38,11 @@ class TypeTreeNodeC:
         m_Index: Optional[int] = None
         m_MetaFlag: Optional[int] = None
         m_RefTypeHash: Optional[int] = None
-        _clean_name: str = field(init=False)
+        _clean_name: str = field()
 
-        def __attrs_post_init__(self):
-            self._clean_name = clean_name(self.m_Name)
+        @_clean_name.default
+        def _clean_name_default(self):
+            return clean_name(self.m_Name)
 
         def __repr__(self):
             return f"TypeTreeNode(m_Level={self.m_Level}, m_Type='{self.m_Type}', \
@@ -90,16 +92,20 @@ def parse(cls, reader: EndianBinaryReader, version: int) -> TypeTreeNode:
             else:
                 stack[-1] = (parent, count - 1)
 
+            node_type = reader.read_string_to_null()
+            node_name = reader.read_string_to_null()
+
             node = cls(
                 m_Level=parent.m_Level + 1,
-                m_Type=reader.read_string_to_null(),
-                m_Name=reader.read_string_to_null(),
+                m_Type=node_type,
+                m_Name=node_name,
                 m_ByteSize=reader.read_int(),
                 m_VariableCount=reader.read_int() if version == 2 else None,
                 m_Index=reader.read_int() if version != 3 else None,
                 m_TypeFlags=reader.read_int(),
                 m_Version=reader.read_int(),
                 m_MetaFlag=reader.read_int() if version != 3 else None,
+                _clean_name=clean_name(node_name),
             )
             parent.m_Children[-count] = node
             children_count = reader.read_int()
@@ -134,11 +140,34 @@ def read_string(reader: EndianBinaryReader, value: int) -> str:
         prev = fake_root
 
         for raw_node in node_struct.iter_unpack(struct_data):
+            node_type = read_string(stringbuffer_reader, raw_node[3])
+            node_name = read_string(stringbuffer_reader, raw_node[4])
+
             node = cls(
-                **dict(zip(keys[:3], raw_node[:3])),
-                **dict(zip(keys[5:], raw_node[5:])),
-                m_Type=read_string(stringbuffer_reader, raw_node[3]),
-                m_Name=read_string(stringbuffer_reader, raw_node[4]),
+                # m_Level
+                raw_node[1],
+                # m_Type
+                node_type,
+                # m_Name
+                node_name,
+                # m_ByteSize
+                raw_node[5],
+                # m_Version
+                raw_node[0],
+                # m_Children
+                [],
+                # m_TypeFlags
+                raw_node[2],
+                # m_VariableCount
+                None,
+                # m_Index
+                raw_node[6],
+                # m_MetaFlag
+                raw_node[7],
+                # m_RefTypehash
+                raw_node[8] if len(raw_node) >= 9 else None,
+                # _clean_name
+                clean_name(node_name),
             )
 
             if node.m_Level > prev.m_Level:
@@ -324,6 +353,7 @@ def _get_blob_node_struct(endian: str, version: int) -> tuple[Struct, list[str]]
 CLEAN_NAME_REPLACE_RE = re.compile(r"[ \.:\-\[\]]")
 
 
+@cache
 def clean_name(name: str) -> str:
     # keep in sync with TypeTreeHelper.cpp
     if len(name) == 0:
diff --git a/UnityPyBoost/TypeTreeHelper.cpp b/UnityPyBoost/TypeTreeHelper.cpp
index ec9fa234..f958a540 100644
--- a/UnityPyBoost/TypeTreeHelper.cpp
+++ b/UnityPyBoost/TypeTreeHelper.cpp
@@ -1138,6 +1138,7 @@ static int TypeTreeNode_init(TypeTreeNodeObject *self, PyObject *args, PyObject
         "m_Index",
         "m_MetaFlag",
         "m_RefTypeHash",
+        "_clean_name",
         nullptr};
 
     // ensure all fields are set to 0
@@ -1155,7 +1156,7 @@ static int TypeTreeNode_init(TypeTreeNodeObject *self, PyObject *args, PyObject
     self->m_RefTypeHash = nullptr;
     self->_clean_name = nullptr;
 
-    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O!O!O!O!O!|OOOOOO", (char **)kwlist,
+    if (!PyArg_ParseTupleAndKeywords(args, kwargs, "O!O!O!O!O!|OOOOOOO", (char **)kwlist,
                                      // required fields
                                      &PyLong_Type, &self->m_Level,
                                      &PyUnicode_Type, &self->m_Type,
@@ -1168,7 +1169,8 @@ static int TypeTreeNode_init(TypeTreeNodeObject *self, PyObject *args, PyObject
                                      &self->m_VariableCount,
                                      &self->m_Index,
                                      &self->m_MetaFlag,
-                                     &self->m_RefTypeHash))
+                                     &self->m_RefTypeHash,
+                                     &self->_clean_name))
     {
         return -1;
     }
@@ -1212,9 +1214,13 @@ static int TypeTreeNode_init(TypeTreeNodeObject *self, PyObject *args, PyObject
     self->_data_type = get_node_data_type(self->m_Type);
     self->_align = (self->m_MetaFlag != Py_None && PyLong_AsLong(self->m_MetaFlag) & 0x4000);
 
-    std::string sname = PyUnicode_AsUTF8(self->m_Name);
-    std::string sclean_name = clean_name(sname);
-    self->_clean_name = PyUnicode_FromString(sclean_name.c_str()); // comes with strong ref
+    if (self->_clean_name == nullptr){
+        std::string sname = PyUnicode_AsUTF8(self->m_Name);
+        std::string sclean_name = clean_name(sname);
+        self->_clean_name = PyUnicode_FromString(sclean_name.c_str()); // comes with strong ref
+    } else {
+        Py_INCREF(self->_clean_name);
+    }
     return 0;
 }