diff --git a/client-v2/src/main/java/com/clickhouse/client/api/Client.java b/client-v2/src/main/java/com/clickhouse/client/api/Client.java
index a358da2c5..ee4f4678d 100644
--- a/client-v2/src/main/java/com/clickhouse/client/api/Client.java
+++ b/client-v2/src/main/java/com/clickhouse/client/api/Client.java
@@ -801,6 +801,8 @@ public Client build() {
             return new Client(this.endpoints, this.configuration, this.useNewImplementation, this.sharedOperationExecutor);
         }
 
+        private static final int DEFAULT_NETWORK_BUFFER_SIZE = 300_000;
+
         private void setDefaults() {
 
             // set default database name if not specified
@@ -858,7 +860,7 @@ private void setDefaults() {
             }
 
             if (!configuration.containsKey("client_network_buffer_size")) {
-                setClientNetworkBufferSize(8192);
+                setClientNetworkBufferSize(DEFAULT_NETWORK_BUFFER_SIZE);
             }
 
             if (!configuration.containsKey(ClickHouseClientOption.RETRY.getKey())) {