diff --git a/rhino/elemente.py b/rhino/elemente.py
index 408e447..0f6156c 100644
--- a/rhino/elemente.py
+++ b/rhino/elemente.py
@@ -2751,6 +2751,43 @@ class _ClusterVolumeSelectHandler(Rhino.UI.MouseCallback):
 _STICKY_CLUSTER_SELECT = "_dossier_cluster_select_handler"
 
 
+def _prewarm_native_libs():
+    """Beim Plugin-Start native OpenNURBS-Operationen einmal triggern damit
+    der lazy-loaded native Code geladen ist. Eliminiert den First-Call-Lag
+    bei der ersten echten Wand-Verbindung (Boolean-Union, Curve.Offset,
+    Extrusion.Create — alle laden ihren native code beim ersten Aufruf)."""
+    try:
+        # Dummy Curve-Offset (laedt native offset code)
+        line = rg.LineCurve(rg.Point3d(0, 0, 0), rg.Point3d(1, 0, 0))
+        try: line.Offset(rg.Plane.WorldXY, 0.1, 0.001,
+                          rg.CurveOffsetCornerStyle.Sharp)
+        except Exception: pass
+        # Dummy Extrusion (laedt native extrude code)
+        try:
+            poly = rg.Polyline([rg.Point3d(0, 0, 0), rg.Point3d(1, 0, 0),
+                                  rg.Point3d(1, 1, 0), rg.Point3d(0, 1, 0),
+                                  rg.Point3d(0, 0, 0)])
+            pc = rg.PolylineCurve(poly)
+            ext = rg.Extrusion.Create(pc, 1.0, True)
+            if ext is not None:
+                ext.ToBrep()
+        except Exception: pass
+        # Dummy Boolean-Union (laedt native boolean code — DAS war wahrscheinlich
+        # der grosse First-Call-Lag bei Wand-Verbindung)
+        try:
+            b1 = rg.Brep.CreateFromBox(rg.BoundingBox(
+                rg.Point3d(0, 0, 0), rg.Point3d(1, 1, 1)))
+            b2 = rg.Brep.CreateFromBox(rg.BoundingBox(
+                rg.Point3d(0.5, 0, 0), rg.Point3d(1.5, 1, 1)))
+            if b1 and b2:
+                rg.Brep.CreateBooleanUnion([b1, b2], 0.001)
+                rg.Brep.CreateBooleanDifference([b1], [b2], 0.001)
+        except Exception: pass
+        print("[ELEMENTE] Native libs pre-warmed (offset/extrude/boolean)")
+    except Exception as ex:
+        print("[ELEMENTE] prewarm:", ex)
+
+
 def install_cluster_select_handler():
     """Idempotent: alten Handler disable, neuen installieren."""
     try:
@@ -17421,6 +17458,13 @@ def _install_listeners(bridge):
         install_cluster_select_handler()
     except Exception as ex:
         print("[ELEMENTE] cluster-select install:", ex)
+    # Pre-Warm: native OpenNURBS-Libraries beim Plugin-Start laden um den
+    # First-Call-Lag zu vermeiden (User-Meldung: beim ersten Wand-Verbinden
+    # haengt das UI kurz, danach nicht mehr → native code wird lazy-loaded).
+    try:
+        _prewarm_native_libs()
+    except Exception as ex:
+        print("[ELEMENTE] prewarm native:", ex)
 
 
 def _bridge_factory():