diff --git a/app/Display/ScreenControl.cs b/app/Display/ScreenControl.cs
index 29fa2f31..16e934e1 100644
--- a/app/Display/ScreenControl.cs
+++ b/app/Display/ScreenControl.cs
@@ -7,6 +7,13 @@ namespace GHelper.Display
 
         public const int MAX_REFRESH = 1000;
         public static int MIN_RATE = AppConfig.Get("min_rate", 60);
+        public static int MAX_RATE = AppConfig.Get("max_rate");
+
+        public static int GetMaxRate(string? laptopScreen)
+        {
+            if (MAX_RATE > 0) return MAX_RATE;
+            else return ScreenNative.GetMaxRefreshRate(laptopScreen);
+        }
 
         public void AutoScreen(bool force = false)
         {
@@ -29,7 +36,7 @@ namespace GHelper.Display
             var refreshRate = ScreenNative.GetRefreshRate(laptopScreen);
             if (refreshRate < 0) return;
 
-            ScreenNative.SetRefreshRate(laptopScreen, refreshRate > MIN_RATE ? MIN_RATE : ScreenNative.GetMaxRefreshRate(laptopScreen));
+            ScreenNative.SetRefreshRate(laptopScreen, refreshRate > MIN_RATE ? MIN_RATE : GetMaxRate(laptopScreen));
             InitScreen();
         }
 
@@ -43,7 +50,7 @@ namespace GHelper.Display
 
             if (frequency >= MAX_REFRESH)
             {
-                frequency = ScreenNative.GetMaxRefreshRate(laptopScreen);
+                frequency = GetMaxRate(laptopScreen);
             }
 
             if (frequency > 0 && frequency != refreshRate)
@@ -151,7 +158,7 @@ namespace GHelper.Display
         {
             var laptopScreen = ScreenNative.FindLaptopScreen();
             int frequency = ScreenNative.GetRefreshRate(laptopScreen);
-            int maxFrequency = ScreenNative.GetMaxRefreshRate(laptopScreen);
+            int maxFrequency = GetMaxRate(laptopScreen);
 
             if (maxFrequency > 0) AppConfig.Set("max_frequency", maxFrequency);
             else maxFrequency = AppConfig.Get("max_frequency");