diff --git a/masterfs/src/org/netbeans/modules/masterfs/filebasedfs/fileobjects/BaseFileObj.java b/masterfs/src/org/netbeans/modules/masterfs/filebasedfs/fileobjects/BaseFileObj.java
--- a/masterfs/src/org/netbeans/modules/masterfs/filebasedfs/fileobjects/BaseFileObj.java
+++ b/masterfs/src/org/netbeans/modules/masterfs/filebasedfs/fileobjects/BaseFileObj.java
@@ -358,6 +358,8 @@
             }
         } else if (attrName.equals("ExistsParentNoPublicAPI")) {
             return getExistingParent() != null;
+        } else if (attrName.equals("getChildrenFast")) {
+            return getChildren();
         } else if (attrName.startsWith("ProvidedExtensions")) {  //NOI18N
             // #158600 - delegate to ProvidedExtensions if attrName starts with ProvidedExtensions prefix
             ProvidedExtensions extension = getProvidedExtensions();
diff --git a/openide.filesystems/src/org/openide/filesystems/AbstractFileObject.java b/openide.filesystems/src/org/openide/filesystems/AbstractFileObject.java
--- a/openide.filesystems/src/org/openide/filesystems/AbstractFileObject.java
+++ b/openide.filesystems/src/org/openide/filesystems/AbstractFileObject.java
@@ -321,6 +321,9 @@
 
     /** performance hack */
     final Object getAttribute(String attrName, String path) {
+        if (attrName.equals("getChildrenFast")) {
+            return getChildren();
+        }
         return getAbstractFileSystem().attr.readAttribute(path, attrName);
     }
 
diff --git a/openide.loaders/src/org/openide/loaders/FolderChildren.java b/openide.loaders/src/org/openide/loaders/FolderChildren.java
--- a/openide.loaders/src/org/openide/loaders/FolderChildren.java
+++ b/openide.loaders/src/org/openide/loaders/FolderChildren.java
@@ -130,7 +130,7 @@
     /** Deep refresh or not.
      * @param operation 0 == shallow, 1 == deep, -1 == clear, 10 = shallow immediatelly
      */
-    final void refreshChildren(int operation) {
+    final void refreshChildren(final int operation) {
         class R implements Runnable {
             int op;
             public void run() {
@@ -147,7 +147,8 @@
                         return;
                     }
 
-                    final FileObject[] arr = folder.getPrimaryFile().getChildren();
+                    final FileObject[] arr = operation == 10 ? (FileObject[]) folder.getPrimaryFile().getAttribute("getChildrenFast") // NOI18N
+                        : folder.getPrimaryFile().getChildren();
                     FolderOrder order = FolderOrder.findFor(folder.getPrimaryFile());
                     Arrays.sort(arr, order);
                     List<FolderChildrenPair> positioned = new ArrayList<FolderChildrenPair>(arr.length);