diff --git a/brozzler/js-templates/umbraBehavior.js.j2 b/brozzler/js-templates/umbraBehavior.js.j2
index a8e2be7..0cece1c 100644
--- a/brozzler/js-templates/umbraBehavior.js.j2
+++ b/brozzler/js-templates/umbraBehavior.js.j2
@@ -25,7 +25,7 @@ class UmbraBehavior {
         this.alreadyDone = [];
         this.idleSince = null;
         this.intervalId = null;
-        this.intervalTimeMs = 1000;
+        this.intervalTimeMs = 300;
         this.index = 0;
     }