diff --git a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
index b1dc1ffd..42057c09 100644
--- a/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
+++ b/v2rayN/ServiceLib/Services/CoreConfig/CoreConfigV2rayService.cs
@@ -1366,16 +1366,32 @@ public class CoreConfigV2rayService
 
     private async Task<int> GenBalancer(V2rayConfig v2rayConfig, EMultipleLoad multipleLoad)
     {
-        if (multipleLoad is EMultipleLoad.LeastLoad or EMultipleLoad.LeastPing)
+        if (multipleLoad == EMultipleLoad.LeastPing)
         {
             var observatory = new Observatory4Ray
             {
                 subjectSelector = [Global.ProxyTag],
                 probeUrl = AppHandler.Instance.Config.SpeedTestItem.SpeedPingTestUrl,
-                probeInterval = "3m"
+                probeInterval = "3m",
+                enableConcurrency = true,
             };
             v2rayConfig.observatory = observatory;
         }
+        else if (multipleLoad == EMultipleLoad.LeastLoad)
+        {
+            var burstObservatory = new BurstObservatory4Ray
+            {
+                subjectSelector = [Global.ProxyTag],
+                pingConfig = new()
+                {
+                    destination = AppHandler.Instance.Config.SpeedTestItem.SpeedPingTestUrl,
+                    interval = "5m",
+                    timeout = "30s",
+                    sampling = 2,
+                }
+            };
+            v2rayConfig.burstObservatory = burstObservatory;
+        }
         var strategyType = multipleLoad switch
         {
             EMultipleLoad.Random => "random",