diff --git a/deploy/prod/common-values-iris-mpc.yaml b/deploy/prod/common-values-iris-mpc.yaml
index ff058f146..3f577013c 100644
--- a/deploy/prod/common-values-iris-mpc.yaml
+++ b/deploy/prod/common-values-iris-mpc.yaml
@@ -1,4 +1,4 @@
-image: "ghcr.io/worldcoin/iris-mpc:v0.8.35"
+image: "ghcr.io/worldcoin/iris-mpc:v0.8.36"
 
 environment: prod
 replicaCount: 1
diff --git a/deploy/prod/smpcv2-0-prod/values-iris-mpc.yaml b/deploy/prod/smpcv2-0-prod/values-iris-mpc.yaml
index 3ab0addfc..991f430ea 100644
--- a/deploy/prod/smpcv2-0-prod/values-iris-mpc.yaml
+++ b/deploy/prod/smpcv2-0-prod/values-iris-mpc.yaml
@@ -84,7 +84,7 @@ env:
     value: "10000000"
 
   - name: SMPC__FAKE_DB_SIZE
-    value: "6000000"
+    value: "1000000"
 
   - name: SMPC__MAX_BATCH_SIZE
     value: "64"
diff --git a/deploy/prod/smpcv2-1-prod/values-iris-mpc.yaml b/deploy/prod/smpcv2-1-prod/values-iris-mpc.yaml
index 852d2c0e2..01ef43ce7 100644
--- a/deploy/prod/smpcv2-1-prod/values-iris-mpc.yaml
+++ b/deploy/prod/smpcv2-1-prod/values-iris-mpc.yaml
@@ -84,7 +84,7 @@ env:
     value: "10000000"
 
   - name: SMPC__FAKE_DB_SIZE
-    value: "6000000"
+    value: "1000000"
 
   - name: SMPC__MAX_BATCH_SIZE
     value: "64"
diff --git a/deploy/prod/smpcv2-2-prod/values-iris-mpc.yaml b/deploy/prod/smpcv2-2-prod/values-iris-mpc.yaml
index 31a7d06e4..bd952b80b 100644
--- a/deploy/prod/smpcv2-2-prod/values-iris-mpc.yaml
+++ b/deploy/prod/smpcv2-2-prod/values-iris-mpc.yaml
@@ -84,7 +84,7 @@ env:
     value: "10000000"
 
   - name: SMPC__FAKE_DB_SIZE
-    value: "6000000"
+    value: "1000000"
 
   - name: SMPC__MAX_BATCH_SIZE
     value: "64"
diff --git a/iris-mpc-gpu/src/server/actor.rs b/iris-mpc-gpu/src/server/actor.rs
index fd422bb4e..99a0f16b2 100644
--- a/iris-mpc-gpu/src/server/actor.rs
+++ b/iris-mpc-gpu/src/server/actor.rs
@@ -31,7 +31,7 @@ use iris_mpc_common::{
 use itertools::Itertools;
 use rand::{rngs::StdRng, SeedableRng};
 use ring::hkdf::{Algorithm, Okm, Salt, HKDF_SHA256};
-use std::{collections::HashMap, mem, sync::Arc, time::Instant};
+use std::{collections::HashMap, mem, slice::SliceIndex, sync::Arc, time::Instant};
 use tokio::sync::{mpsc, oneshot};
 
 macro_rules! record_stream_time {
@@ -503,6 +503,60 @@ impl ServerActor {
             "Query batch sizes mismatch"
         );
 
+        ///////////////////////////////////////////////////////////////////
+        /// DEBUG: performance testing
+        ///////////////////////////////////////////////////////////////////
+        let mut slices = vec![];
+        let mut slices1 = vec![];
+        let mut slices2 = vec![];
+        let mut slices3 = vec![];
+        const DUMMY_DATA_LEN: usize = 5 * (1 << 30);
+        for dev in self.device_manager.devices() {
+            let slice: CudaSlice<u8> = dev.alloc_zeros(DUMMY_DATA_LEN).unwrap();
+            let slice1: CudaSlice<u8> = dev.alloc_zeros(DUMMY_DATA_LEN).unwrap();
+            let slice2: CudaSlice<u8> = dev.alloc_zeros(DUMMY_DATA_LEN).unwrap();
+            let slice3: CudaSlice<u8> = dev.alloc_zeros(DUMMY_DATA_LEN).unwrap();
+            slices.push(Some(slice));
+            slices1.push(slice1);
+            slices2.push(slice2);
+            slices3.push(slice3);
+        }
+
+        let now = Instant::now();
+
+        for i in 0..self.device_manager.device_count() {
+            self.device_manager.device(i).bind_to_thread().unwrap();
+
+            self.comms[i]
+                .broadcast(&slices[i], &mut slices1[i], 0)
+                .unwrap();
+            self.comms[i]
+                .broadcast(&slices[i], &mut slices2[i], 1)
+                .unwrap();
+            self.comms[i]
+                .broadcast(&slices[i], &mut slices3[i], 2)
+                .unwrap();
+        }
+
+        for dev in self.device_manager.devices() {
+            dev.synchronize().unwrap();
+        }
+
+        let elapsed = now.elapsed();
+
+        let throughput = (DUMMY_DATA_LEN as f64 * self.device_manager.device_count() as f64 * 4f64)
+            / (elapsed.as_millis() as f64)
+            / 1_000_000_000f64
+            * 1_000f64;
+        tracing::info!(
+            "received in {:?} [{:.2} GB/s] [{:.2} Gbps]",
+            elapsed,
+            throughput,
+            throughput * 8f64
+        );
+
+        let now = Instant::now();
+
         ///////////////////////////////////////////////////////////////////
         // PERFORM DELETIONS (IF ANY)
         ///////////////////////////////////////////////////////////////////