diff --git a/README.md b/README.md
index 011eb6b..fb3d949 100644
--- a/README.md
+++ b/README.md
@@ -25,6 +25,8 @@ nach einer ausdrücklichen Freigabe ausführen.
   [`docs/V1_4_0_OPERATING_GUIDE.md`](docs/V1_4_0_OPERATING_GUIDE.md)
 - Version 1.5.0 Menü-Dashboard und kompakte Detaildaten:
   [`docs/V1_5_0_OPERATING_GUIDE.md`](docs/V1_5_0_OPERATING_GUIDE.md)
+- Version 1.5.1 Stabilisierung der Dashboard-Ladepfade:
+  [`docs/V1_5_1_OPERATING_GUIDE.md`](docs/V1_5_1_OPERATING_GUIDE.md)
 - Arbeitsregeln für Coding-Agenten: [`AGENTS.md`](AGENTS.md)
 
 ## Reifegrad
diff --git a/addon/config.yaml b/addon/config.yaml
index 9c99025..6378ab0 100644
--- a/addon/config.yaml
+++ b/addon/config.yaml
@@ -1,5 +1,5 @@
 name: SillyHome Next
-version: "1.5.0"
+version: "1.5.1"
 slug: sillyhome_next
 description: Lernt automatisch aus deinem Verhalten und steuert freigegebene Aktoren
 url: http://192.168.6.31:3000/pino/sillyhome-next
diff --git a/app/api/v1/actuators.py b/app/api/v1/actuators.py
index 556f1a9..9c4df23 100644
--- a/app/api/v1/actuators.py
+++ b/app/api/v1/actuators.py
@@ -306,15 +306,25 @@ def list_configured_summary(request: Request) -> list[ActuatorSummary]:
 
 @router.get("/dashboard", response_model=DashboardOverview)
 def dashboard_overview(request: Request) -> DashboardOverview:
-    return _dashboard_overview(request, include_background=True)
+    return _dashboard_overview(request, include_background=True, include_actuators=True)
 
 
 @router.get("/dashboard/start", response_model=DashboardOverview)
 def dashboard_start(request: Request) -> DashboardOverview:
-    return _dashboard_overview(request, include_background=False)
+    return _dashboard_overview(request, include_background=False, include_actuators=True)
 
 
-def _dashboard_overview(request: Request, *, include_background: bool) -> DashboardOverview:
+@router.get("/dashboard/system", response_model=DashboardOverview)
+def dashboard_system(request: Request) -> DashboardOverview:
+    return _dashboard_overview(request, include_background=False, include_actuators=False)
+
+
+def _dashboard_overview(
+    request: Request,
+    *,
+    include_background: bool,
+    include_actuators: bool,
+) -> DashboardOverview:
     cache_payload = _load_entity_cache_payload(request)
     raw_entities = cache_payload.get("entities", [])
     if not isinstance(raw_entities, list):
@@ -329,7 +339,7 @@ def _dashboard_overview(request: Request, *, include_background: bool) -> Dashbo
     ] if include_background and isinstance(raw_groups, list) else []
     reconciliation = _reconciliation_state_or_default(request)
     ws_status = getattr(request.app.state, "ws_status", None)
-    actuators = list_configured_summary(request)
+    actuators = list_configured_summary(request) if include_actuators else []
     store = getattr(request.app.state, "actuator_store", None)
     jobs = (
         store.load_job_queue()
@@ -348,7 +358,11 @@ def _dashboard_overview(request: Request, *, include_background: bool) -> Dashbo
                 if reconciliation.last_completed_at is not None
                 else None
             ),
-            configured_actuators=len(actuators),
+            configured_actuators=(
+                len(actuators)
+                if include_actuators
+                else reconciliation.configured_actuators
+            ),
             trained_models=reconciliation.trained_models,
             review_required=reconciliation.review_required,
             job_p95_duration_ms=job_p95_duration_ms,
diff --git a/app/main.py b/app/main.py
index baf51e5..29f446e 100644
--- a/app/main.py
+++ b/app/main.py
@@ -105,7 +105,7 @@ async def lifespan(app: FastAPI) -> AsyncIterator[None]:
 app = FastAPI(
     title="SillyHome Next API",
     description="Lokales Smart-Home-Intelligenzsystem für Home Assistant.",
-    version="1.5.0",
+    version="1.5.1",
     lifespan=lifespan,
 )
 app.state.settings = load_settings()
diff --git a/app/static/index.html b/app/static/index.html
index 52bd379..9838220 100644
--- a/app/static/index.html
+++ b/app/static/index.html
@@ -56,6 +56,8 @@
     .manual-context > summary,
     .group-panel > summary { cursor:pointer; font-weight:800; color:#eaf1f8; }
     details.collapsible > summary { list-style:none; display:flex; justify-content:space-between; gap:10px; }
+    .manual-context > summary,
+    .group-panel > summary { display:flex; justify-content:space-between; gap:10px; align-items:center; }
     details.collapsible > summary::-webkit-details-marker,
     .manual-context > summary::-webkit-details-marker,
     .group-panel > summary::-webkit-details-marker { display:none; }
@@ -526,6 +528,11 @@ async function apiWithTimeout(path, timeoutMs = STATUS_TIMEOUT_MS) {
   const timeout = setTimeout(() => controller.abort(), timeoutMs);
   try {
     return await api(path, {signal: controller.signal});
+  } catch (error) {
+    if (error?.name === "AbortError") {
+      throw new Error("Zeitlimit erreicht; Daten laden im Hintergrund weiter.");
+    }
+    throw error;
   } finally {
     clearTimeout(timeout);
   }
@@ -652,7 +659,7 @@ async function loadOverview() {
   if (budget) budget.textContent = "Startdaten laden ...";
   document.getElementById("configured-actuators").innerHTML = "<p class='muted'>Beobachtete Geräte werden geladen ...</p>";
   try {
-    const dashboard = await apiWithTimeout("v1/actuators/dashboard/start", DASHBOARD_TIMEOUT_MS);
+    const dashboard = await api("v1/actuators/dashboard/start");
     dashboard._load_elapsed_ms = Math.round(performance.now() - startedAt);
     cachedActuators = dashboard.actuators || [];
     cachedEntities = [];
@@ -682,7 +689,7 @@ async function loadSystemOverview() {
   const budget = document.getElementById("load-budget");
   if (budget) budget.textContent = "Systemübersicht lädt ...";
   try {
-    const dashboard = await apiWithTimeout("v1/actuators/dashboard/start", DASHBOARD_TIMEOUT_MS);
+    const dashboard = await api("v1/actuators/dashboard/system");
     dashboard._load_elapsed_ms = Math.round(performance.now() - startedAt);
     cachedActuators = dashboard.actuators || cachedActuators;
     renderDashboardStatus(dashboard);
@@ -1764,7 +1771,7 @@ async function startDashboard() {
   document.getElementById("section-jump").value = "status-section";
   showView("status-section");
   await new Promise(resolve => requestAnimationFrame(resolve));
-  void loadStatus();
+  setTimeout(() => void loadStatus(), 100);
 }
 
 void startDashboard();
diff --git a/docs/V1_5_1_OPERATING_GUIDE.md b/docs/V1_5_1_OPERATING_GUIDE.md
new file mode 100644
index 0000000..f58573c
--- /dev/null
+++ b/docs/V1_5_1_OPERATING_GUIDE.md
@@ -0,0 +1,32 @@
+# SillyHome Next v1.5.1 Operating Guide
+
+v1.5.1 ist ein Stabilisierungshotfix für die nach v1.2.0 entstandenen
+Dashboard-Änderungen. Fachlich gehört diese Arbeit zur v1.2.x-Patchlinie; die
+höhere technische Versionsnummer ist nur nötig, weil Home Assistant bereits
+v1.5.0 installiert hat und Add-on-Updates monoton nach oben laufen.
+
+## Korrekturen
+
+- Die System-Startseite nutzt `GET /v1/actuators/dashboard/system` und lädt
+  keine Aktorenliste.
+- Sichtbare 3-Sekunden-Abbrüche mit Browsertexten wie `signal is aborted
+  without reason` wurden entfernt.
+- Startdaten und Detaildaten werden ohne künstlichen Frontend-Abbruch geladen.
+- Timeout-Meldungen werden deutsch und verständlich angezeigt, wenn sie bei
+  Nebenprüfungen auftreten.
+- `summary`-Zeilen wie `anzeigenaufklappen` haben jetzt Abstand und Layout.
+
+## Ladeverhalten
+
+- Statische Seite wird sofort gerendert.
+- Systemdaten laden im Hintergrund.
+- Lernen/Geräte laden nur im Menü `Lernen`.
+- Discovery lädt nur im Menü `Discovery & Einrichtung`.
+- Aktorwerte laden erst beim Öffnen der Detailansicht.
+- Kontextvorschläge laden erst auf Nutzeraktion.
+
+## Hinweis zur Performance-Anzeige
+
+Die App zeigt keine echte HA/Ingress-Navigationszeit an. Gemessen werden nur
+einzelne interne Abrufe nach Start der Seite. Aussagen zur gesamten Ladezeit
+müssen über Browser/Ingress oder HA-Messung geprüft werden.
diff --git a/pyproject.toml b/pyproject.toml
index 6b599af..f355321 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "sillyhome-next"
-version = "1.5.0"
+version = "1.5.1"
 description = "Lokales Smart-Home-Intelligenzsystem für Home Assistant"
 requires-python = ">=3.11"
 dependencies = [
diff --git a/tests/api/test_actuators.py b/tests/api/test_actuators.py
index 0fc06cb..321d1c7 100644
--- a/tests/api/test_actuators.py
+++ b/tests/api/test_actuators.py
@@ -446,14 +446,17 @@ def test_dashboard_reports_performance_budget_and_anomalies(tmp_path: Path) -> N
 
         dashboard_response = client.get("/v1/actuators/dashboard")
         start_response = client.get("/v1/actuators/dashboard/start")
+        system_response = client.get("/v1/actuators/dashboard/system")
         anomalies_response = client.get("/v1/actuators/anomalies")
 
     assert dashboard_response.status_code == 200
     assert start_response.status_code == 200
+    assert system_response.status_code == 200
     system = dashboard_response.json()["system"]
     start_payload = start_response.json()
     assert start_payload["jobs"]["jobs"] == []
     assert start_payload["discovery_groups"] == []
+    assert system_response.json()["actuators"] == []
     assert system["performance_budget_ms"] == 3000
     assert system["slow_job_count"] == 1
     assert system["performance_status"] == "slow"