diff --git a/Qwilight/QwilightComponent.cs b/Qwilight/QwilightComponent.cs
index ed56750..470ef16 100644
--- a/Qwilight/QwilightComponent.cs
+++ b/Qwilight/QwilightComponent.cs
@@ -59,7 +59,7 @@
         public static readonly string UtilityEntryPath;
         public static readonly string AMD64Name = string.Empty;
         public static readonly string OSName = Environment.OSVersion.ToString();
-        public static readonly ulong RAM;
+        public static readonly long RAM;
         public static readonly string RAMName = string.Empty;
         public static readonly string GPUName = string.Empty;
         public static readonly string M2Name = string.Empty;
@@ -169,7 +169,7 @@
 
             try
             {
-                RAM = Utility.GetWMI("SELECT TotalPhysicalMemory FROM Win32_ComputerSystem").Select(o => (ulong)o["TotalPhysicalMemory"]).Single();
+                RAM = Utility.GetWMI("SELECT TotalPhysicalMemory FROM Win32_ComputerSystem").Select(o => (long)(ulong)o["TotalPhysicalMemory"]).Single();
             }
             catch
             {
diff --git a/Qwilight/System/Configure/Configure.cs b/Qwilight/System/Configure/Configure.cs
index a57e9cf..57e05e7 100644
--- a/Qwilight/System/Configure/Configure.cs
+++ b/Qwilight/System/Configure/Configure.cs
@@ -285,6 +285,8 @@
         DefaultAudioVariety _defaultAudioVariety;
         int _valueGASLevel;
         bool _wmPointer;
+        bool _autoLazyGC;
+        long _lazyGC;
 
         public bool WMPointer
         {
@@ -304,7 +306,19 @@
 
         public string WMPointerText => WMPointer ? LanguageSystem.Instance.WMPointerText : LanguageSystem.Instance.NotWMPointerText;
 
-        public long LazyGCV2 { get; set; }
+        public bool AutoLazyGC
+        {
+            get => _autoLazyGC;
+
+            set => SetProperty(ref _autoLazyGC, value, nameof(AutoLazyGC));
+        }
+
+        public long LazyGCV2
+        {
+            get => _lazyGC;
+
+            set => SetProperty(ref _lazyGC, value, nameof(LazyGCV2));
+        }
 
         public int GASLevel
         {
@@ -3546,7 +3560,8 @@
             }
             if (isInit || Utility.IsLowerDate(Date, 1, 16, 31))
             {
-                LazyGCV2 = 4096L;
+                AutoLazyGC = true;
+                LazyGCV2 = 0L;
             }
             if (!UIConfigureValuesV2.ContainsKey(UIItemValue.Title))
             {
diff --git a/Qwilight/View/ConfigureWindow/DetailedConfigureWindow.xaml b/Qwilight/View/ConfigureWindow/DetailedConfigureWindow.xaml
index a1022ab..351358d 100644
--- a/Qwilight/View/ConfigureWindow/DetailedConfigureWindow.xaml
+++ b/Qwilight/View/ConfigureWindow/DetailedConfigureWindow.xaml
@@ -47,7 +47,10 @@
                     <ColumnDefinition />
                     <ColumnDefinition />
                 </Grid.ColumnDefinitions>
-                <view:BinInput Lowest="0" Value="{Binding LazyGCV2, Source={StaticResource Configure}}" Format="#,##0 MB" HorizontalAlignment="Right" />
+                <StackPanel Orientation="Horizontal" HorizontalAlignment="Right">
+                    <view:BinInput Lowest="0" Value="{Binding LazyGCV2, Source={StaticResource Configure}}" Format="#,##0 MB" IsEnabled="{Binding AutoLazyGC, Source={StaticResource Configure}, Converter={StaticResource NotModifier}}" />
+                    <CheckBox Style="{StaticResource StandardVInput}" Content="{Binding AutoText, Source={StaticResource LanguageSystem}}" IsChecked="{Binding AutoLazyGC, Source={StaticResource Configure}}" />
+                </StackPanel>
                 <TextBlock Grid.Column="1" Style="{StaticResource StandardTextView}" Text="{Binding LazyGCText, Source={StaticResource LanguageSystem}}" HorizontalAlignment="Left" />
             </Grid>
             <ContentControl IsEnabled="{Binding MainValue.IsNoteFileMode, Source={StaticResource ViewModels}}">
diff --git a/Qwilight/ViewModel/MainViewModel.cs b/Qwilight/ViewModel/MainViewModel.cs
index 9089771..72b4c59 100644
--- a/Qwilight/ViewModel/MainViewModel.cs
+++ b/Qwilight/ViewModel/MainViewModel.cs
@@ -252,7 +252,12 @@
             IsPragmatic = !IsWPFViewVisible && IsComputingMode && !Computer.IsPausingWindowOpened;
             if (IsPragmatic)
             {
-                var lazyGC = Configure.Instance.LazyGCV2 * 1000L * 1000L;
+                if (Configure.Instance.AutoLazyGC)
+                {
+                    Configure.Instance.LazyGCV2 = Math.Max(0L, (Utility.GetWMI("SELECT FreePhysicalMemory FROM Win32_OperatingSystem").Select(o => 1000 * (long)(ulong)o["FreePhysicalMemory"]).Single() - QwilightComponent.RAM / 10) / 2 / 1000 / 1000);
+                }
+
+                var lazyGC = Configure.Instance.LazyGCV2 * 1000 * 1000;
                 if (lazyGC > 0L)
                 {
                     try