diff --git a/AquaMai/AquaMai.csproj b/AquaMai/AquaMai.csproj
index 815e02d6..452e1630 100644
--- a/AquaMai/AquaMai.csproj
+++ b/AquaMai/AquaMai.csproj
@@ -266,8 +266,10 @@
     <Compile Include="Cheat\TicketUnlock.cs" />
     <Compile Include="Config.cs" />
     <Compile Include="Fix\FixCharaCrash.cs" />
+    <Compile Include="Performance\ImproveLoadSpeed.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Main.cs" />
+    <Compile Include="UX\CustomVersionString.cs" />
     <Compile Include="UX\SinglePlayer.cs" />
     <Compile Include="UX\SkipWarningScreen.cs" />
     <Compile Include="UX\SkipToMusicSelection.cs" />
diff --git a/AquaMai/AquaMai.toml b/AquaMai/AquaMai.toml
index bdbe445e..4e3816fe 100644
--- a/AquaMai/AquaMai.toml
+++ b/AquaMai/AquaMai.toml
@@ -13,4 +13,11 @@ SkipWarningScreen=true
 # Single player: Show 1P only, at the center of the screen
 SinglePlayer=true
 # !!EXPERIMENTAL!! Skip from the card-scanning screen directly to music selection screen
-SkipToMusicSelection=false
\ No newline at end of file
+SkipToMusicSelection=false
+# Set the version string displayed at the top-right corner of the screen
+CustomVersionString=""
+
+[Performance]
+# Disable some useless checks and delays to speed up the game boot process
+# !! Known issue: The game may crash if DX Pass scanning is enabled
+ImproveLoadSpeed=false
\ No newline at end of file
diff --git a/AquaMai/Config.cs b/AquaMai/Config.cs
index a9b8fb56..3a4d39fc 100644
--- a/AquaMai/Config.cs
+++ b/AquaMai/Config.cs
@@ -7,6 +7,7 @@ namespace AquaMai
     {
         public UXConfig UX { get; set; }
         public CheatConfig Cheat { get; set; }
+        public PerformanceConfig Performance { get; set; }
 
         public class CheatConfig
         {
@@ -18,6 +19,12 @@ namespace AquaMai
             public bool SkipWarningScreen { get; set; }
             public bool SinglePlayer { get; set; }
             public bool SkipToMusicSelection { get; set; }
+            public string CustomVersionString { get; set; }
+        }
+        
+        public class PerformanceConfig
+        {
+            public bool ImproveLoadSpeed { get; set; }
         }
     }
 }
diff --git a/AquaMai/Main.cs b/AquaMai/Main.cs
index a69e69aa..6a35b971 100644
--- a/AquaMai/Main.cs
+++ b/AquaMai/Main.cs
@@ -1,5 +1,6 @@
 using System;
 using AquaMai.Fix;
+using AquaMai.UX;
 using MelonLoader;
 using Tomlet;
 
@@ -77,6 +78,7 @@ namespace AquaMai
             // Fixes that does not have side effects
             // These don't need to be configurable
             Patch(typeof(FixCharaCrash));
+            Patch(typeof(CustomVersionString));
 
             MelonLogger.Msg("Loaded!");
         }
diff --git a/AquaMai/Performance/ImproveLoadSpeed.cs b/AquaMai/Performance/ImproveLoadSpeed.cs
new file mode 100644
index 00000000..006ac44a
--- /dev/null
+++ b/AquaMai/Performance/ImproveLoadSpeed.cs
@@ -0,0 +1,63 @@
+using System.Diagnostics;
+using HarmonyLib;
+using MAI2.Util;
+using Manager;
+using Process;
+
+namespace AquaMai.Performance
+{
+    public class ImproveLoadSpeed
+    {
+        [HarmonyPrefix]
+        [HarmonyPatch(typeof(PowerOnProcess), "OnUpdate")]
+        public static bool PrePowerOnUpdate(PowerOnProcess __instance)
+        {
+            var traverse = Traverse.Create(__instance);
+            var state = traverse.Field("_state").GetValue<byte>();
+            switch (state)
+            {
+                case 3:
+                    traverse.Field("_state").SetValue((byte)4);
+                    break;
+                case 5:
+                case 6:
+                case 7:
+                    traverse.Field("_state").SetValue((byte)8);
+                    break;
+                case 9:
+                    traverse.Field("_state").SetValue((byte)10);
+                    break;
+            }
+
+            return true;
+        }
+        
+        [HarmonyPrefix]
+        [HarmonyPatch(typeof(StartupProcess), "OnUpdate")]
+        public static bool PreStartupUpdate(StartupProcess __instance)
+        {
+            var traverse = Traverse.Create(__instance);
+            var state = traverse.Field("_state").GetValue<byte>();
+            switch (state)
+            {
+                case 0:
+                    traverse.Field("_state").SetValue((byte)1);
+                    break;
+                case 2:
+                    // AimeReader maybe typeof AimeReaderManager or ChimeReaderManager, must build with correct Assembly-CSharp.dll in Libs folder
+                    if(SingletonStateMachine<AmManager, AmManager.EState>.Instance.AimeReader.GetType().FullName == "Manager.AimeReaderManager")
+                        traverse.Field("_state").SetValue((byte)3);
+                    break;
+                case 4:
+                    traverse.Field("_state").SetValue((byte)5);
+                    break;
+                case 8:
+                    var timer = traverse.Field("timer").GetValue<Stopwatch>();
+                    Traverse.Create(timer).Field("elapsed").SetValue(2 * 10000000L);
+                    break;
+            }
+
+            return true;
+        }
+    }
+}
\ No newline at end of file
diff --git a/AquaMai/UX/CustomVersionString.cs b/AquaMai/UX/CustomVersionString.cs
new file mode 100644
index 00000000..78282ea9
--- /dev/null
+++ b/AquaMai/UX/CustomVersionString.cs
@@ -0,0 +1,24 @@
+using HarmonyLib;
+
+namespace AquaMai.UX
+{
+    public class CustomVersionString
+    {
+        /*
+         * Patch displayVersionString Property Getter
+         */
+        [HarmonyPrefix]
+        [HarmonyPatch(typeof(MAI2System.Config), "displayVersionString", MethodType.Getter)]
+        public static bool GetDisplayVersionString(ref string __result)
+        {
+            if (string.IsNullOrEmpty(AquaMai.AppConfig.UX.CustomVersionString))
+            {
+                return true;
+            }
+
+            __result = AquaMai.AppConfig.UX.CustomVersionString;
+            // Return false to block the original method
+            return false;
+        }
+    }
+}
\ No newline at end of file