diff --git a/main.py b/main.py
index 6d8c61c..56368dc 100644
--- a/main.py
+++ b/main.py
@@ -210,6 +210,12 @@ def serve_dashboard_root():
 from fastapi.staticfiles import StaticFiles
 app.mount("/static", StaticFiles(directory="static"), name="static")
 
+from fastapi.responses import Response
+@app.get("/favicon.ico", include_in_schema=False)
+async def favicon():
+    return Response(status_code=204, media_type="image/x-icon")
+
+
 
 # === WebSocket endpoint for live vitals ===
 @app.websocket("/ws/vitals")
diff --git a/static/dashboard.html b/static/dashboard.html
index d06a6d6..2434271 100644
--- a/static/dashboard.html
+++ b/static/dashboard.html
@@ -8,6 +8,17 @@
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=JetBrains+Mono:wght@400;600;700&display=swap" rel="stylesheet">
+    <link rel="icon" href="data:image/svg+xml,<svg xmlns=%22http://www.w3.org/2000/svg%22 viewBox=%220 0 100 100%22><text y=%22.9em%22 font-size=%2290%22>🩺</text></svg>">
+    <script>
+        // Suppress browser extension message channel port errors inside telemetry embed
+        window.addEventListener('unhandledrejection', function(event) {
+            var msg = (event && event.reason && (event.reason.message || event.reason)) || '';
+            if (typeof msg === 'string' && msg.indexOf('A listener indicated an asynchronous response') !== -1) {
+                event.preventDefault();
+            }
+        });
+    </script>
+
     <style>
         /* === CSS Reset & Base === */
         *, *::before, *::after {
@@ -2801,6 +2812,12 @@
         }
 
         function stepContecMachineSweep(timestamp) {
+            if (document.hidden) {
+                machLastFrameTime = timestamp;
+                requestAnimationFrame(stepContecMachineSweep);
+                return;
+            }
+
             if (!ctxMachEcg || !canvasMachEcg) {
                 requestAnimationFrame(stepContecMachineSweep);
                 return;
@@ -4787,6 +4804,10 @@
         }
 
         function animateWaveforms() {
+            if (isMinimal || document.hidden) {
+                requestAnimationFrame(animateWaveforms);
+                return;
+            }
             waveformPhase += 0.05;
 
             // Generate idle waveforms for cards with no data