diff --git a/backend/src/app/loggers/audit.clj b/backend/src/app/loggers/audit.clj
index bbffcf7811..3aca18ed90 100644
--- a/backend/src/app/loggers/audit.clj
+++ b/backend/src/app/loggers/audit.clj
@@ -75,9 +75,9 @@
   [_ {:keys [enabled] :as cfg}]
   (when enabled
     (l/info :msg "intializing audit collector")
-    (let [input  (a/chan 1 event-xform)
+    (let [input  (a/chan 512 event-xform)
           buffer (aa/batch input {:max-batch-size 100
-                                  :max-batch-age (* 5 1000)
+                                  :max-batch-age (* 10 1000) ; 10s
                                   :init []})]
       (a/go-loop []
         (when-let [[type events] (a/<! buffer)]
diff --git a/backend/src/app/util/async.clj b/backend/src/app/util/async.clj
index 984cbb1679..6193fbe2fd 100644
--- a/backend/src/app/util/async.clj
+++ b/backend/src/app/util/async.clj
@@ -64,12 +64,14 @@
 (defn batch
   [in {:keys [max-batch-size
               max-batch-age
+              buffer-size
               init]
        :or {max-batch-size 200
             max-batch-age (* 30 1000)
+            buffer-size 128
             init #{}}
        :as opts}]
-  (let [out (a/chan)]
+  (let [out (a/chan buffer-size)]
     (a/go-loop [tch (a/timeout max-batch-age) buf init]
       (let [[val port] (a/alts! [tch in])]
         (cond