diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
index b8877b9f..e3e2d9af 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/LaunchServer.java
@@ -39,6 +39,8 @@
 import java.security.interfaces.ECPublicKey;
 import java.util.*;
 import java.util.Map.Entry;
+import java.util.concurrent.Executors;
+import java.util.concurrent.ScheduledExecutorService;
 import java.util.concurrent.atomic.AtomicBoolean;
 import java.util.stream.Stream;
 
@@ -116,7 +118,9 @@ public final class LaunchServer implements Runnable, AutoCloseable, Reconfigurab
     // Server
     public final CommandHandler commandHandler;
     public final NettyServerSocketHandler nettyServerSocketHandler;
+    @Deprecated
     public final Timer taskPool;
+    public final ScheduledExecutorService service;
     public final AtomicBoolean started = new AtomicBoolean(false);
     public final LauncherModuleLoader launcherModuleLoader;
     public LaunchServerConfig config;
@@ -139,6 +143,7 @@ public LaunchServer(LaunchServerDirectories directories, LaunchServerEnv env, La
         this.commandHandler = commandHandler;
         this.runtime = runtimeConfig;
         this.certificateManager = certificateManager;
+        this.service = Executors.newScheduledThreadPool(config.netty.performance.schedulerThread);
         taskPool = new Timer("Timered task worker thread", true);
         launcherLibraries = directories.launcherLibrariesDir;
         launcherLibrariesCompile = directories.launcherLibrariesCompileDir;
@@ -286,6 +291,7 @@ public void buildLauncherBinaries() throws IOException {
     }
 
     public void close() throws Exception {
+        service.shutdownNow();
         logger.info("Close server socket");
         nettyServerSocketHandler.close();
         // Close handlers & providers
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/command/hash/SaveProfilesCommand.java b/LaunchServer/src/main/java/pro/gravit/launchserver/command/hash/SaveProfilesCommand.java
index a2313d15..26f4c017 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/command/hash/SaveProfilesCommand.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/command/hash/SaveProfilesCommand.java
@@ -48,7 +48,7 @@ public static ClientProfile makeProfile(ClientProfile.Version version, String ti
         jvmArgs.add("-XX:+DisableAttachMechanism");
         // Official Mojang launcher java arguments
         jvmArgs.add("-XX:+UseG1GC");
-        jvmArgs.add("XX:+UnlockExperimentalVMOptions");
+        jvmArgs.add("-XX:+UnlockExperimentalVMOptions");
         jvmArgs.add("-XX:G1NewSizePercent=20");
         jvmArgs.add("-XX:MaxGCPauseMillis=50");
         jvmArgs.add("-XX:G1HeapRegionSize=32M");
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java b/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
index d8ff08dc..abe277cc 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/config/LaunchServerConfig.java
@@ -90,6 +90,7 @@ public static LaunchServerConfig getDefault(LaunchServer.LaunchServerEnv env) {
         } // such as on ARM
         newConfig.netty.performance.bossThread = 2;
         newConfig.netty.performance.workerThread = 8;
+        newConfig.netty.performance.schedulerThread = 2;
 
         newConfig.launcher = new LauncherConf();
         newConfig.launcher.guardType = "no";
@@ -323,6 +324,7 @@ public static class NettyPerformanceConfig {
         public boolean usingEpoll;
         public int bossThread;
         public int workerThread;
+        public int schedulerThread;
         public long sessionLifetimeMs = 24 * 60 * 60 * 1000;
         public int maxWebSocketRequestBytes = 1024 * 1024;
     }
diff --git a/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/PingServerManager.java b/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/PingServerManager.java
index 7a56985f..cc9ace7e 100644
--- a/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/PingServerManager.java
+++ b/LaunchServer/src/main/java/pro/gravit/launchserver/manangers/PingServerManager.java
@@ -6,6 +6,7 @@
 
 import java.util.HashMap;
 import java.util.Map;
+import java.util.concurrent.CompletableFuture;
 
 public class PingServerManager {
     public static final long REPORT_EXPIRED_TIME = 20 * 1000;
@@ -38,6 +39,10 @@ public boolean updateServer(String name, PingServerReportRequest.PingServerRepor
         }
     }
 
+    public CompletableFuture<ServerInfoEntry> pingMinecraftServer(String hostname, int port) {
+        throw new UnsupportedOperationException("not implemented");
+    }
+
     public static class ServerInfoEntry {
         public final ClientProfile profile;
         public PingServerReportRequest.PingServerReport lastReport;