diff --git a/implementations/rust/ockam/ockam_api/tests/portals.rs b/implementations/rust/ockam/ockam_api/tests/portals.rs
index d1b0ab9d1e6..b86a303bfc8 100644
--- a/implementations/rust/ockam/ockam_api/tests/portals.rs
+++ b/implementations/rust/ockam/ockam_api/tests/portals.rs
@@ -223,12 +223,12 @@ fn portal_node_goes_down_reconnect() {
 #[test]
 fn portal_low_bandwidth_connection_keep_working_for_60s() {
     // in this test we use two nodes, connected through a passthrough server
-    // which limits the bandwidth to 64kb per second
+    // which limits the bandwidth to 170kb per second
     //
     // ┌────────┐     ┌───────────┐        ┌────────┐
     // │  Node  └─────►    TCP    └────────►  Node  │
     // │   1    ◄─────┐Passthrough◄────────┐   2    │
-    // └────┬───┘     │  64KB/s   │        └────▲───┘
+    // └────┬───┘     │  170KB/s  │        └────▲───┘
     //      │         └───────────┘             │
     //      │         ┌───────────┐             │
     //      │ Portal  │   TCP     │      Outlet │
@@ -270,8 +270,8 @@ fn portal_low_bandwidth_connection_keep_working_for_60s() {
 
             let passthrough_server_handle = start_passthrough_server(
                 &second_node_listen_address.to_string(),
-                Disruption::LimitBandwidth(64 * 1024),
-                Disruption::LimitBandwidth(64 * 1024),
+                Disruption::LimitBandwidth(170 * 1024),
+                Disruption::LimitBandwidth(170 * 1024),
             )
             .await;
 
diff --git a/implementations/rust/ockam/ockam_transport_tcp/src/portal/portal_message.rs b/implementations/rust/ockam/ockam_transport_tcp/src/portal/portal_message.rs
index 6c2ba0fb5b0..603d8844d4d 100644
--- a/implementations/rust/ockam/ockam_transport_tcp/src/portal/portal_message.rs
+++ b/implementations/rust/ockam/ockam_transport_tcp/src/portal/portal_message.rs
@@ -108,7 +108,7 @@ pub enum PortalInternalMessage {
 }
 
 /// Maximum allowed size for a payload
-pub const MAX_PAYLOAD_SIZE: usize = 48 * 1024;
+pub const MAX_PAYLOAD_SIZE: usize = 128 * 1024;
 
 #[cfg(test)]
 mod test {
diff --git a/tools/stress-test/src/portal_simulator.rs b/tools/stress-test/src/portal_simulator.rs
index 7194610dd9d..93ea4aa0c30 100644
--- a/tools/stress-test/src/portal_simulator.rs
+++ b/tools/stress-test/src/portal_simulator.rs
@@ -13,6 +13,8 @@ use ockam_multiaddr::MultiAddr;
 
 use crate::config::Throughput;
 
+pub const MAX_PAYLOAD_SIZE: usize = 128 * 1024;
+
 pub struct PortalStats {
     pub messages_out_of_order: Arc<AtomicU64>,
     pub bytes_received: Arc<AtomicU64>,
@@ -97,7 +99,7 @@ impl Processor for PortalSimulatorSender {
 
         while bytes_left > 0 {
             let next_message_number = self.messages_sent.fetch_add(1, Ordering::Relaxed);
-            let payload_size = std::cmp::min(bytes_left, 48 * 1024);
+            let payload_size = std::cmp::min(bytes_left, MAX_PAYLOAD_SIZE);
             let mut message = Vec::with_capacity(8 + 8 + payload_size);
 
             message.extend_from_slice(&next_message_number.to_le_bytes());