diff --git a/diagnostic/server.js b/diagnostic/server.js
index 71a6898..34968a6 100644
--- a/diagnostic/server.js
+++ b/diagnostic/server.js
@@ -1246,7 +1246,7 @@ function connectRVS(forcePlain) {
   });
 }
 
-function sendToRVS_withResponse(sendType, sendPayload, expectType, clientWs) {
+function sendToRVS_withResponse(sendType, sendPayload, expectType, clientWs, timeoutMs = 15000) {
   if (!RVS_HOST || !RVS_TOKEN) return;
   const proto = RVS_TLS === "true" ? "wss" : "ws";
   const url = `${proto}://${RVS_HOST}:${RVS_PORT}?token=${RVS_TOKEN}`;
@@ -1254,7 +1254,7 @@ function sendToRVS_withResponse(sendType, sendPayload, expectType, clientWs) {
   const timeout = setTimeout(() => {
     try { freshWs.close(); } catch (_) {}
     clientWs.send(JSON.stringify({ type: expectType, payload: { voices: [], error: "Timeout" }, timestamp: Date.now() }));
-  }, 15000);
+  }, timeoutMs);
   freshWs.on("open", () => {
     freshWs.send(JSON.stringify({ type: sendType, payload: sendPayload, timestamp: Date.now() }));
   });
@@ -2948,7 +2948,7 @@ wss.on("connection", (ws) => {
           messages: [{ role: "user", content: String(msg.text || "Sag kurz Hallo.") }],
           max_tokens: 256, temperature: 0.5,
           model: msg.model || "", targetInstance: msg.targetInstance || "",
-        }, "llm_response", ws);
+        }, "llm_response", ws, 120000);  // 2min: erster Modell-Swap laedt das GGUF kalt (mehrere GB) — 15s reichen dann nicht
         log("info", "llm", `Test-Chat → ${msg.model || "?"} @ ${msg.targetInstance || "(broadcast)"}`);
       } else if (msg.action === "node_stats_stream_start" || msg.action === "node_stats_stream_stop"
                  || msg.action === "node_stats_history_request" || msg.action === "node_stats_reset") {