diff --git a/.env.development b/.env.development
index 85ec8a3ad..65ecc5b74 100644
--- a/.env.development
+++ b/.env.development
@@ -25,4 +25,4 @@ NEXT_PUBLIC_USE_MOCKS=true
 NEXT_PUBLIC_BASE_PATH=/talas5
 # Oder leer lassen für direkten Zugriff ->  NEXT_PUBLIC_BASE_PATH=
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.1.307
+NEXT_PUBLIC_APP_VERSION=1.1.309
diff --git a/.env.production b/.env.production
index 44a446fd8..26a705de6 100644
--- a/.env.production
+++ b/.env.production
@@ -26,4 +26,4 @@ NEXT_PUBLIC_BASE_PATH=/talas5
 # Oder leer lassen für direkten Zugriff ->  NEXT_PUBLIC_BASE_PATH=
 
 # App-Versionsnummer
-NEXT_PUBLIC_APP_VERSION=1.1.307
\ No newline at end of file
+NEXT_PUBLIC_APP_VERSION=1.1.309
diff --git a/components/devices/hooks/useDynamicDeviceLayers.js b/components/devices/hooks/useDynamicDeviceLayers.js
index c60612a8e..32f452ee3 100644
--- a/components/devices/hooks/useDynamicDeviceLayers.js
+++ b/components/devices/hooks/useDynamicDeviceLayers.js
@@ -70,7 +70,7 @@ const useDynamicDeviceLayers = (map, GisSystemStatic, mapLayersVisibility, prior
     const editMode = localStorage.getItem("editMode") === "true";
 
     Object.entries(markerStates).forEach(([key, markers]) => {
-      const isVisible = mapLayersVisibility[key];
+      const isVisible = mapLayersVisibility[key] ?? true; // undefined = true
 
       markers.forEach(marker => {
         const hasLayer = map.hasLayer(marker);
diff --git a/components/hooks/useStationCache.js b/components/hooks/useStationCache.js
new file mode 100644
index 000000000..e69de29bb
diff --git a/components/mainComponent/MapComponent.js b/components/mainComponent/MapComponent.js
index 84e3c200f..2ef0eb14c 100644
--- a/components/mainComponent/MapComponent.js
+++ b/components/mainComponent/MapComponent.js
@@ -834,30 +834,6 @@ const MapComponent = ({ locations, onLocationUpdate, lineCoordinates }) => {
     }
   }, [poiIconsData, poiIconsStatus]);
   //-----------------------------------------------------------------
-  useEffect(() => {
-    if (!map) return;
-
-    const editMode = localStorage.getItem("editMode") === "true";
-
-    Object.entries(markerStates).forEach(([systemName, markers]) => {
-      const isVisible = mapLayersVisibility[systemName];
-      markers.forEach(marker => {
-        const hasLayer = map.hasLayer(marker);
-        if (editMode || !isVisible) {
-          if (hasLayer) map.removeLayer(marker);
-        } else {
-          if (!hasLayer) marker.addTo(map);
-        }
-      });
-    });
-
-    // optional für alle zusammen
-    const allMarkers = Object.values(markerStates)
-      .filter(entry => Array.isArray(entry))
-      .flat();
-
-    checkOverlappingMarkers(map, allMarkers, plusRoundIcon);
-  }, [map, markerStates, mapLayersVisibility]);
 
   //----------------------------------------------
   useEffect(() => {
@@ -933,6 +909,21 @@ const MapComponent = ({ locations, onLocationUpdate, lineCoordinates }) => {
   }, [GisStationsStaticDistrict]);
   const { Points = [] } = useSelector(selectGisStationsStaticDistrict);
   useEffect(() => {}, [triggerUpdate]);
+  //--------------------------------------------------------------------------------
+  useEffect(() => {
+    console.log("📊 GisSystemStatic:", GisSystemStatic);
+  }, [GisSystemStatic]);
+  useEffect(() => {
+    if (Array.isArray(GisSystemStatic)) {
+      GisSystemStatic.forEach(system => {
+        const key = `system-${system.IdSystem}`;
+        if (!(key in mapLayersVisibility)) {
+          dispatch(setLayerVisibility({ key, value: true })); // Sichtbarkeit aktivieren
+        }
+      });
+    }
+  }, [GisSystemStatic, mapLayersVisibility, dispatch]);
+
   //---------------------------------------------
   //--------------------------------------------
   return (
diff --git a/nodemap-1.1.305.zip b/nodemap-1.1.305.zip
deleted file mode 100644
index d653fb146..000000000
Binary files a/nodemap-1.1.305.zip and /dev/null differ
diff --git a/package-lock.json b/package-lock.json
index 7e1b6b93a..d90ff1e9f 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "nodemap",
-  "version": "1.1.307",
+  "version": "1.1.309",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "nodemap",
-      "version": "1.1.307",
+      "version": "1.1.309",
       "dependencies": {
         "@emotion/react": "^11.13.3",
         "@emotion/styled": "^11.13.0",
diff --git a/package.json b/package.json
index 2129913ad..8fb4dd1da 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "nodemap",
-  "version": "1.1.307",
+  "version": "1.1.309",
   "dependencies": {
     "@emotion/react": "^11.13.3",
     "@emotion/styled": "^11.13.0",
diff --git a/server.js b/server.js
index 066b7e840..740073e99 100644
--- a/server.js
+++ b/server.js
@@ -33,10 +33,15 @@ app.prepare().then(() => {
 
   const io = new Server(server);
 
+  // ✅ Globaler Cache für alle aktuellen Daten
+  const globalDataCache = new Map();
+
   io.on("connection", socket => {
     const { m: idMap, u: idUser } = socket.handshake.query;
     console.log(`🔌 WebSocket verbunden (idMap=${idMap}, idUser=${idUser})`);
 
+    const cacheKey = `${idMap}_${idUser}`;
+
     const endpoints = [
       {
         name: "GisLinesStatus",
@@ -69,6 +74,22 @@ app.prepare().then(() => {
 
     const lastDataMap = {};
 
+    // ✅ Funktion um sofort alle verfügbaren Daten zu senden (für Browser-Reload)
+    const sendAllCurrentData = () => {
+      const cachedData = globalDataCache.get(cacheKey);
+      if (cachedData && Object.keys(cachedData).length > 0) {
+        console.log(
+          `📦 Sending all current data to client (${Object.keys(cachedData).length} endpoints)`
+        );
+        Object.entries(cachedData).forEach(([name, data]) => {
+          socket.emit(`${name}Updated`, data);
+          console.log(`🔄 Browser-Reload: ${name} data sent`);
+        });
+      } else {
+        console.log(`📭 No cached data available for ${cacheKey}, will fetch fresh data`);
+      }
+    };
+
     const fetchData = async () => {
       for (const { name, getUrl, mock } of endpoints) {
         try {
@@ -99,6 +120,14 @@ app.prepare().then(() => {
           }
 
           const newDataStr = JSON.stringify(statis);
+
+          // ✅ Cache aktualisieren
+          if (!globalDataCache.has(cacheKey)) {
+            globalDataCache.set(cacheKey, {});
+          }
+          globalDataCache.get(cacheKey)[name] = statis;
+
+          // ✅ Nur bei Änderungen senden (setInterval-Logik)
           if (newDataStr !== lastDataMap[name]) {
             lastDataMap[name] = newDataStr;
             socket.emit(`${name}Updated`, statis);
@@ -113,9 +142,15 @@ app.prepare().then(() => {
       }
     };
 
-    // fetchData immer ausführen – unabhängig vom Modus
+    // ✅ Beim Connect: Sofort alle aktuellen Daten senden (für Browser-Reload)
+    sendAllCurrentData();
+
+    // ✅ Dann erste Datenabfrage durchführen
     fetchData();
+
+    // ✅ setInterval für regelmäßige Updates (nur bei Änderungen)
     const interval = setInterval(fetchData, 5000); // 5 Sekunden ,TALAS.web nutzt  12 Sekunden
+
     socket.on("disconnect", () => {
       clearInterval(interval);
       console.log("❌ WebSocket getrennt");
diff --git a/services/localStorage/stationCacheService.js b/services/localStorage/stationCacheService.js
new file mode 100644
index 000000000..e69de29bb
diff --git a/services/webservice/idsystemTypFilterService.js b/services/webservice/idsystemTypFilterService.js
new file mode 100644
index 000000000..e69de29bb
diff --git a/utils/devices/createAndSetDevices.js b/utils/devices/createAndSetDevices.js
index ffd8a06f0..daa0240c4 100644
--- a/utils/devices/createAndSetDevices.js
+++ b/utils/devices/createAndSetDevices.js
@@ -30,7 +30,8 @@ export const createAndSetDevices = async (
   const systemConfig = Array.isArray(GisSystemStatic)
     ? GisSystemStatic.find(sys => sys.IdSystem === systemId)
     : null;
-  if (!systemConfig || systemConfig.Allow !== 1) {
+  if (!systemConfig) {
+    console.warn(`🚫 Kein Marker für System ${systemId}, Allow = ${systemConfig?.Allow}`);
     setMarkersFunction([]);
     return;
   }
@@ -42,7 +43,8 @@ export const createAndSetDevices = async (
     const statusDistrictData = selectGisStationsStatusDistrict(state);
     const measurementData = selectGisStationsMeasurements(state);
 
-    if (!staticDistrictData?.Points?.length || !statusDistrictData?.length) return;
+    if (!staticDistrictData?.Points?.length) return;
+    const hasStatus = Array.isArray(statusDistrictData) && statusDistrictData.length > 0;
 
     const statisMap = new Map(statusDistrictData.map(s => [s.IdLD, s]));
     const measurementsMap = new Map();
diff --git a/utils/filters/idsystemTypFilter.js b/utils/filters/idsystemTypFilter.js
new file mode 100644
index 000000000..e69de29bb