diff --git a/gateway/src/config/mod.rs b/gateway/src/config/mod.rs
index e7bfb65095..2d3f57abf0 100644
--- a/gateway/src/config/mod.rs
+++ b/gateway/src/config/mod.rs
@@ -24,7 +24,7 @@ const DEFAULT_PRESENCE_SENDING_DELAY: Duration = Duration::from_millis(10_000);
 const DEFAULT_PACKET_FORWARDING_INITIAL_BACKOFF: Duration = Duration::from_millis(10_000);
 const DEFAULT_PACKET_FORWARDING_MAXIMUM_BACKOFF: Duration = Duration::from_millis(300_000);
 const DEFAULT_INITIAL_CONNECTION_TIMEOUT: Duration = Duration::from_millis(1_500);
-const DEFAULT_MAXIMUM_CONNECTION_BUFFER_SIZE: usize = 128;
+const DEFAULT_MAXIMUM_CONNECTION_BUFFER_SIZE: usize = 2000;
 
 const DEFAULT_STORED_MESSAGE_FILENAME_LENGTH: u16 = 16;
 const DEFAULT_MESSAGE_RETRIEVAL_LIMIT: i64 = 100;
diff --git a/mixnode/src/config/mod.rs b/mixnode/src/config/mod.rs
index 51f713bed7..5320a382f3 100644
--- a/mixnode/src/config/mod.rs
+++ b/mixnode/src/config/mod.rs
@@ -35,7 +35,7 @@ const DEFAULT_NODE_STATS_UPDATING_DELAY: Duration = Duration::from_millis(30_000
 const DEFAULT_PACKET_FORWARDING_INITIAL_BACKOFF: Duration = Duration::from_millis(10_000);
 const DEFAULT_PACKET_FORWARDING_MAXIMUM_BACKOFF: Duration = Duration::from_millis(300_000);
 const DEFAULT_INITIAL_CONNECTION_TIMEOUT: Duration = Duration::from_millis(1_500);
-const DEFAULT_MAXIMUM_CONNECTION_BUFFER_SIZE: usize = 128;
+const DEFAULT_MAXIMUM_CONNECTION_BUFFER_SIZE: usize = 2000;
 
 pub fn missing_string_value<T: From<String>>() -> T {
     MISSING_VALUE.to_string().into()