diff --git a/mapper/src/App.js b/mapper/src/App.js
index 90cc666..645870f 100644
--- a/mapper/src/App.js
+++ b/mapper/src/App.js
@@ -294,11 +294,17 @@ function App() {
 	const [slider, setSlider] = useState(initialSlider);
 
 	useEffect(() => {
-		const params = new URLSearchParams();
-		params.set('duration', duration.id);
-		params.set('end', end.unix());
-		params.set('slider', slider.join(','));
-		window.history.replaceState({}, '', `${window.location.pathname}?${params.toString()}`);
+		const handler = setTimeout(() => {
+			const params = new URLSearchParams();
+			params.set('duration', duration.id);
+			params.set('end', end.unix());
+			params.set('slider', slider.join(','));
+			window.history.replaceState({}, '', `${window.location.pathname}?${params.toString()}`);
+		}, 500);
+
+		return () => {
+			clearTimeout(handler);
+		};
 	}, [duration, end, slider]);
 
 	return (