diff --git a/v2rayN/ServiceLib/Handler/AutoStartupHandler.cs b/v2rayN/ServiceLib/Handler/AutoStartupHandler.cs
index fd7d7fc9..e1ac902a 100644
--- a/v2rayN/ServiceLib/Handler/AutoStartupHandler.cs
+++ b/v2rayN/ServiceLib/Handler/AutoStartupHandler.cs
@@ -111,6 +111,7 @@ public static class AutoStartupHandler
         task.Settings.RunOnlyIfIdle = false;
         task.Settings.IdleSettings.StopOnIdleEnd = false;
         task.Settings.ExecutionTimeLimit = TimeSpan.Zero;
+        task.Settings.Priority = ProcessPriorityClass.Normal;
         task.Triggers.Add(new Microsoft.Win32.TaskScheduler.LogonTrigger { UserId = logonUser, Delay = TimeSpan.FromSeconds(30) });
         task.Principal.RunLevel = Microsoft.Win32.TaskScheduler.TaskRunLevel.Highest;
         task.Actions.Add(new Microsoft.Win32.TaskScheduler.ExecAction(fileName.AppendQuotes(), null, Path.GetDirectoryName(fileName)));