diff --git a/src/howl.rs b/src/howl.rs
index 3d6ad62..bfdb1df 100644
--- a/src/howl.rs
+++ b/src/howl.rs
@@ -147,17 +147,17 @@ fn produce_messages(
         }
     }
 
+    let ev44 = generate_fake_events(fbb, rng, frame, conf.event_message_config, now_nanos).to_vec();
+
     for _ in 0..conf.messages_per_frame {
         match producer.send(
             BaseRecord::to(conf.event_topic)
                 .key("")
-                .payload(generate_fake_events(
-                    fbb,
-                    rng,
-                    frame,
-                    conf.event_message_config,
-                    now_nanos,
-                ))
+                .payload(if conf.fast {
+                    ev44.as_slice()
+                } else {
+                    generate_fake_events(fbb, rng, frame, conf.event_message_config, now_nanos)
+                })
                 .timestamp(now_nanos / 1_000_000),
         ) {
             Ok(_) => {}
@@ -273,6 +273,7 @@ pub struct HowlConfig<'a> {
     pub frames_per_run: u32,
     pub veto_probability: f64, // 1 = always vetoed, 0 = never vetoed
     pub event_message_config: &'a EventMessageConfig,
+    pub fast: bool,
     pub kafka_config: Option<Vec<KafkaOption>>,
 }
 
diff --git a/src/main.rs b/src/main.rs
index fa13210..0ac9c45 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -98,6 +98,9 @@ enum Commands {
         /// Veto probability (0 = never vetoed; 1 = always vetoed)
         #[arg(long, default_value = "0.0")]
         veto_probability: f64,
+        /// Enable howl fast mode (Disables randomised ev44 blob generation)
+        #[arg(long, action=clap::ArgAction::SetTrue)]
+        fast: bool,
         // Additonal command line arguments
         #[arg(short = 'X', long)]
         kafka_config: Option<Vec<KafkaOption>>,
@@ -164,6 +167,7 @@ async fn main() {
             det_min,
             det_max,
             veto_probability,
+            fast,
             kafka_config,
         } => howl(&HowlConfig {
             kafka_config,
@@ -181,6 +185,7 @@ async fn main() {
                 det_max,
             },
             veto_probability,
+            fast,
         }),
         Commands::Count {
             topic,