diff --git a/Server/YD_XinWei/Services/Impl/LargeScreenService.cs b/Server/YD_XinWei/Services/Impl/LargeScreenService.cs
index b582074..83ec02b 100644
--- a/Server/YD_XinWei/Services/Impl/LargeScreenService.cs
+++ b/Server/YD_XinWei/Services/Impl/LargeScreenService.cs
@@ -272,15 +272,11 @@ namespace YD_XinWei.Api.Services.Impl
                     s.Rank,
                     s.ScoreTime
                 })
+                .Take(50)
                 .ToListAsync();
 
             // 2. 内存分组取每个学生最新一条
-            var latestPerStudent = sourceData
-                .GroupBy(s => s.StudentNo)
-                .Select(g => g.First()) // 因为前面按 ScoreTime 排过
-                .OrderBy(s => s.ScoreTime)
-                .Take(50)
-                .ToList();
+            var latestPerStudent = sourceData.OrderBy(x=>x.ScoreTime).ToList();
 
             // 3. 映射到 DTO
             var realTimeResults = latestPerStudent
diff --git a/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfo.cs b/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfo.cs
index 76774c8..482d2a5 100644
--- a/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfo.cs
+++ b/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfo.cs
@@ -14,7 +14,7 @@ using System.Reflection;
 [assembly: System.Reflection.AssemblyCompanyAttribute("YD_XinWei.Api")]
 [assembly: System.Reflection.AssemblyConfigurationAttribute("Debug")]
 [assembly: System.Reflection.AssemblyFileVersionAttribute("1.0.0.0")]
-[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+f5873892e13dd05303d2e1923728ae8145db3bb6")]
+[assembly: System.Reflection.AssemblyInformationalVersionAttribute("1.0.0+bd96de2331a7d666a4d8e2b114e0470a03d1866f")]
 [assembly: System.Reflection.AssemblyProductAttribute("YD_XinWei.Api")]
 [assembly: System.Reflection.AssemblyTitleAttribute("YD_XinWei.Api")]
 [assembly: System.Reflection.AssemblyVersionAttribute("1.0.0.0")]
diff --git a/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfoInputs.cache b/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfoInputs.cache
index 39a7211..6367179 100644
--- a/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfoInputs.cache
+++ b/Server/YD_XinWei/obj/Debug/net6.0/YD_XinWei.Api.AssemblyInfoInputs.cache
@@ -1 +1 @@
-1b55e451e5df8b5cfbeba624584454d98ac4b71c594cd85758e5968810368ab3
+a7d3edef1797f546d7f154e83ba45b815ed5461c833e6055d7e38cbb05ed0590
diff --git a/Server/YD_XinWei/obj/Debug/net6.0/apphost.exe b/Server/YD_XinWei/obj/Debug/net6.0/apphost.exe
index 6b31073..bc1ec66 100644
Binary files a/Server/YD_XinWei/obj/Debug/net6.0/apphost.exe and b/Server/YD_XinWei/obj/Debug/net6.0/apphost.exe differ