diff --git a/trunk/src/com/jpexs/decompiler/flash/gui/GenericTagTreePanel.java b/trunk/src/com/jpexs/decompiler/flash/gui/GenericTagTreePanel.java
index 05742228f..b92fe6446 100644
--- a/trunk/src/com/jpexs/decompiler/flash/gui/GenericTagTreePanel.java
+++ b/trunk/src/com/jpexs/decompiler/flash/gui/GenericTagTreePanel.java
@@ -488,14 +488,25 @@ public class GenericTagTreePanel extends GenericTagPanel {
         private final Object mtroot;
         private final List<TreeModelListener> listeners = new ArrayList<>();
         private final Map<String, Object> nodeCache = new HashMap<>();
+        // it is much faster to store the reverse mappings, too
+        private final Map<Object, String> nodeCacheReverse = new HashMap<>();
 
         private Object getNodeByPath(String path) {
+
             if (nodeCache.containsKey(path)) {
                 return nodeCache.get(path);
             }
             return null;
         }
 
+        public String getNodePathName(Object find) {
+
+            if (nodeCacheReverse.containsKey(find)) {
+                return nodeCacheReverse.get(find);
+            }
+            return null;
+        }
+
         public List<FieldNode> getDependentFields(FieldNode fnode) {
             List<FieldNode> ret = new ArrayList<>();
             getDependentFields(getNodePathName(fnode), mtroot.getClass().getSimpleName(), mtroot, ret);
@@ -522,22 +533,13 @@ public class GenericTagTreePanel extends GenericTagPanel {
                     }
                 }
             }
-            for (int i = 0; i < getChildCount(node); i++) {
+            int count = getChildCount(node);
+            for (int i = 0; i < count; i++) {
                 FieldNode f = (FieldNode) getChild(node, i);
                 getDependentFields(dependence, currentPath + "." + f.getName(), f, ret);
             }
         }
 
-        public String getNodePathName(Object find) {
-
-            for (Map.Entry<String, Object> en : nodeCache.entrySet()) {
-                if (en.getValue().equals(find)) {
-                    return en.getKey();
-                }
-            }
-            return null;
-        }
-
         public MyTreeModel(Tag root) {
             super(new DefaultMutableTreeNode(root));
             this.mtroot = root;
@@ -555,7 +557,9 @@ public class GenericTagTreePanel extends GenericTagPanel {
                 parentPath += obj.getClass().getSimpleName();
             }
             nodeCache.put(parentPath, obj);
-            for (int i = 0; i < getChildCount(obj, false); i++) {
+            nodeCacheReverse.put(obj, parentPath);
+            int count = getChildCount(obj, false);
+            for (int i = 0; i < count; i++) {
                 buildCache(getChild(obj, i, false), parentPath);
             }
         }