diff --git a/tests/ab/clientRunner.php b/tests/ab/clientRunner.php
index 3bd8113..d0b0459 100644
--- a/tests/ab/clientRunner.php
+++ b/tests/ab/clientRunner.php
@@ -24,7 +24,7 @@
 
 $loop = React\EventLoop\Factory::create();
 
-$connector = new Connector($loop);
+$connector = new Connector($loop, ['tcp' => ['tcp_nodelay' => true]]);
 
 function echoStreamerFactory(ConnectionInterface $conn, ?PermessageDeflateOptions $permessageDeflateOptions = null): MessageBuffer
 {
diff --git a/tests/ab/startServer.php b/tests/ab/startServer.php
index 0f6fc44..c6e4dc3 100644
--- a/tests/ab/startServer.php
+++ b/tests/ab/startServer.php
@@ -16,7 +16,7 @@
 
 $loop   = \React\EventLoop\Factory::create();
 
-$socket = new \React\Socket\Server('0.0.0.0:9001', $loop);
+$socket = new \React\Socket\Server('0.0.0.0:9001', $loop, ['tcp' => ['tcp_nodelay' => true]]);
 
 $closeFrameChecker = new CloseFrameChecker;