diff --git a/mockserver-core/src/main/java/org/mockserver/configuration/ConfigurationProperties.java b/mockserver-core/src/main/java/org/mockserver/configuration/ConfigurationProperties.java
index <HASH>..<HASH> 100644
--- a/mockserver-core/src/main/java/org/mockserver/configuration/ConfigurationProperties.java
+++ b/mockserver-core/src/main/java/org/mockserver/configuration/ConfigurationProperties.java
@@ -51,7 +51,7 @@ public class ConfigurationProperties {
     private static final String DEFAULT_ENABLE_CORS_FOR_API = "false";
     private static final String DEFAULT_ENABLE_CORS_FOR_ALL_RESPONSES = "false";
     private static final String DEFAULT_PREVENT_CERTIFICATE_DYNAMIC_UPDATE = "false";
-    private static final int DEFAULT_NIO_EVENT_LOOP_THREAD_COUNT = Math.max(35, SystemPropertyUtil.getInt("io.netty.eventLoopThreads", NettyRuntime.availableProcessors()));
+    private static final int DEFAULT_NIO_EVENT_LOOP_THREAD_COUNT = 5;
     private static final int DEFAULT_ACTION_HANDLER_THREAD_COUNT = Math.max(20, Runtime.getRuntime().availableProcessors());
     private static final int DEFAULT_WEB_SOCKET_CLIENT_EVENT_LOOP_THREAD_COUNT = 5;
     private static final String DEFAULT_CERTIFICATE_AUTHORITY_PRIVATE_KEY = "org/mockserver/socket/PKCS8CertificateAuthorityPrivateKey.pem";
reduced the number of event loop threads after performance testing