diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..7b62f12
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,2 @@
+__pycache__
+.vscode
\ No newline at end of file
diff --git a/preferences/__init__.py b/preferences/__init__.py
index b9ff812..2733204 100644
--- a/preferences/__init__.py
+++ b/preferences/__init__.py
@@ -1,21 +1,19 @@
 from . import data_icon, data_config_prop, data_keymap, data_config_filter_panel, prefs
 
 classes = (
-    data_icon, data_config_prop, data_config_filter_panel, data_keymap, prefs
+    data_icon,
+    data_config_prop,
+    data_config_filter_panel,
+    data_keymap,
+    prefs,
 )
 
 
 def register():
-    data_icon.register()
-    data_config_prop.register()
-    data_config_filter_panel.register()
-    data_keymap.register()
-    prefs.register()
+    for cls in classes:
+        cls.register()
 
 
 def unregister():
-    prefs.unregister()
-    data_config_prop.unregister()
-    data_config_filter_panel.unregister()
-    data_keymap.unregister()
-    data_icon.unregister()
+    for cls in reversed(classes):
+        cls.unregister()
diff --git a/preferences/data_icon.py b/preferences/data_icon.py
index f3acd59..dd51648 100644
--- a/preferences/data_icon.py
+++ b/preferences/data_icon.py
@@ -18,7 +18,7 @@ def register_icon():
         if file.endswith('.bip'):
             mats_icon.append(icon_dir.joinpath(file))
     # 注册
-    pcoll = previews.new()
+    pcoll = previews.new(lazy_load=not bpy.app.background)
 
     for icon_path in mats_icon:
         pcoll.load(icon_path.name[:-4], str(icon_path), 'IMAGE')
@@ -32,8 +32,8 @@ def unregister_icon():
 
     for pcoll in G_PV_COLL.values():
         previews.remove(pcoll)
-        G_PV_COLL.clear()
 
+    G_PV_COLL.clear()
     G_ICON_ID.clear()