diff --git a/About.xaml.cs b/About.xaml.cs
index 4174e2a..9701fb3 100644
--- a/About.xaml.cs
+++ b/About.xaml.cs
@@ -11,7 +11,7 @@ namespace AnotherReplayReader
         public About()
         {
             InitializeComponent();
-            _idBox.Text = Auth.ID;
+            _idBox.Text = Auth.Id;
         }
 
         private void Hyperlink_RequestNavigate(object sender, System.Windows.Navigation.RequestNavigateEventArgs e)
diff --git a/Auth.cs b/Auth.cs
index 1098838..1cd777a 100644
--- a/Auth.cs
+++ b/Auth.cs
@@ -9,11 +9,11 @@ namespace AnotherReplayReader
 {
     internal static class Auth
     {
-        public static string? ID { get; }
+        public static string? Id { get; }
 
         static Auth()
         {
-            ID = null;
+            Id = null;
 
             string? windowsID;
             try
@@ -56,17 +56,17 @@ namespace AnotherReplayReader
 
             using var sha = SHA256.Create();
             var hash = sha.ComputeHash(Encoding.UTF8.GetBytes(windowsID + randomKey));
-            ID = string.Concat(hash.Skip(3).Take(10).Select(x => $"{x:X2}"));
+            Id = string.Concat(hash.Skip(3).Take(10).Select(x => $"{x:X2}"));
         }
 
         public static string GetKey()
         {
-            if (ID == null)
+            if (Id == null)
             {
                 return string.Empty;
             }
 
-            var text = $"{ID}{DateTimeOffset.UtcNow.ToUnixTimeSeconds()}";
+            var text = $"{Id}{DateTimeOffset.UtcNow.ToUnixTimeSeconds()}";
             var bytes = Encoding.UTF8.GetBytes(text);
             var pre = Encoding.UTF8.GetBytes("playertable!");
             var salt = new byte[9];
@@ -82,5 +82,17 @@ namespace AnotherReplayReader
 
             return Convert.ToBase64String(salt.Concat(bytes).Select((x, i) => (byte)(x ^ pre[i % pre.Length])).ToArray());
         }
+
+        public static byte[]? IdAsKey()
+        {
+            if (string.IsNullOrEmpty(Id))
+            {
+                return null;
+            }
+            var bytes = Encoding.UTF8.GetBytes(Id);
+            var destination = Enumerable.Repeat<byte>(0xEA, 24).ToArray();
+            Array.Copy(bytes, destination, Math.Min(bytes.Length, destination.Length));
+            return destination;
+        }
     }
 }
diff --git a/Cache.cs b/Cache.cs
index 1365cf2..310f5a6 100644
--- a/Cache.cs
+++ b/Cache.cs
@@ -13,10 +13,12 @@ namespace AnotherReplayReader
         public static string CacheFilePath => Path.Combine(CacheDirectory, "AnotherReplayReader.cache");
 
         private readonly ConcurrentDictionary<string, string> _storage = new();
+        
+        public Task Initialization { get; }
 
         public Cache()
         {
-            Task.Run(async () =>
+            Initialization = Task.Run(async () =>
             {
                 try
                 {
diff --git a/PlayerIdentity.cs b/PlayerIdentity.cs
index b5cfba1..b9f8c38 100644
--- a/PlayerIdentity.cs
+++ b/PlayerIdentity.cs
@@ -86,17 +86,19 @@ namespace AnotherReplayReader
                         _list = converted;
                     }
 
-                    if (list is null)
+                    if (list is null || Auth.IdAsKey() is not { } encryptKey)
                     {
                         _cache.Set<string?>(StoredKey, null);
                         return;
                     }
 
-                    using var aes = Aes.Create();
-                    using var encryptor = aes.CreateEncryptor(Encoding.UTF8.GetBytes(Auth.ID), aes.IV);
                     using var memory = new MemoryStream();
-                    using var decryptorStream = new CryptoStream(memory, encryptor, CryptoStreamMode.Write);
-                    await SerializeAsync(decryptorStream, list, _jsonOptions).ConfigureAwait(false);
+                    using var aes = Aes.Create();
+                    using (var encryptor = aes.CreateEncryptor(encryptKey, aes.IV))
+                    using (var decryptorStream = new CryptoStream(memory, encryptor, CryptoStreamMode.Write))
+                    {
+                        await SerializeAsync(decryptorStream, list, _jsonOptions).ConfigureAwait(false);
+                    }
                     memory.Flush();
                     _cache.SetValues((StoredKey, Convert.ToBase64String(memory.ToArray())), (IvKey, Convert.ToBase64String(aes.IV)));
                 }
@@ -155,15 +157,16 @@ namespace AnotherReplayReader
         {
             try
             {
+                await _cache.Initialization;
                 var stored = _cache.GetOrDefault(StoredKey, string.Empty);
                 var iv = Convert.FromBase64String(_cache.GetOrDefault(IvKey, string.Empty));
-                if (string.IsNullOrWhiteSpace(stored))
+                if (string.IsNullOrWhiteSpace(stored) || Auth.IdAsKey() is not { } key)
                 {
                     return;
                 }
 
                 using var aes = Aes.Create();
-                using var decryptor = aes.CreateDecryptor(Encoding.UTF8.GetBytes(Auth.ID), iv);
+                using var decryptor = aes.CreateDecryptor(key, iv);
                 using var memory = new MemoryStream(Convert.FromBase64String(stored));
                 using var decryptorStream = new CryptoStream(memory, decryptor, CryptoStreamMode.Read);
                 var cachedTable = await DeserializeAsync<List<IpAndPlayer>>(decryptorStream, _jsonOptions).ConfigureAwait(false);
diff --git a/Window1.xaml b/Window1.xaml
index fdd9701..7920edd 100644
--- a/Window1.xaml
+++ b/Window1.xaml
@@ -13,7 +13,11 @@
         <TextBox x:Name="_idField" Height="16" Margin="294,27,92,0" TextWrapping="Wrap" Text="" VerticalAlignment="Top" TextChanged="OnIpFieldChanged" />
         <TextBlock x:Name="textBlock1" HorizontalAlignment="Left" Margin="205,28,0,0" TextWrapping="Wrap" Text="玩家名称 / 说明" VerticalAlignment="Top"/>
         <Button x:Name="_setIPButton" Content="上传" Margin="705,26,12,0" VerticalAlignment="Top" Click="OnClick"/>
-        <DataGrid x:Name="_dataGrid" Margin="20,60,12,19" MouseDoubleClick="DataGrid_MouseDoubleClick" IsReadOnly="True">
+        <DataGrid x:Name="_dataGrid"
+                  Margin="20,60,12,19"
+                  MouseDoubleClick="DataGrid_MouseDoubleClick"
+                  IsReadOnly="True"
+                  AutoGenerateColumns="False">
             <DataGrid.Columns>
                 <DataGridTextColumn Header="IP" Binding="{Binding Path=IpString}"/>
                 <DataGridTextColumn Header="玩家名称 / 说明" Binding="{Binding Path=Id}"/>
diff --git a/Window1.xaml.cs b/Window1.xaml.cs
index 72f8963..7049328 100644
--- a/Window1.xaml.cs
+++ b/Window1.xaml.cs
@@ -1,5 +1,7 @@
 using AnotherReplayReader.Utils;
 using System;
+using System.Collections.Generic;
+using System.Collections.ObjectModel;
 using System.Linq;
 using System.Net;
 using System.Threading.Tasks;
@@ -20,16 +22,21 @@ namespace AnotherReplayReader
         {
             InitializeComponent();
             _identity = identity;
-            Refresh();
+            Refresh(true);
         }
 
-        private async void Refresh()
+        private async void Refresh(bool showCached)
         {
             _setIPButton.IsEnabled = false;
             try
             {
-                _dataGrid.Items.Clear();
-                _dataGrid.Items.Add(new IpAndPlayer { Ip = 0, Id = "正在加载..." });
+                var loading = new IpAndPlayer[] { new() { Ip = 0, Id = "正在加载..." } };
+                _dataGrid.ItemsSource = loading;
+                if (showCached)
+                {
+                    await Display();
+                    _dataGrid.ItemsSource = loading.Concat(_dataGrid.ItemsSource.Cast<IpAndPlayer>());
+                }
                 await _identity.Fetch();
                 await Display();
             }
@@ -45,10 +52,10 @@ namespace AnotherReplayReader
 
         private async Task Display(string filter = "", string nameFilter = "")
         {
-            var newList = await Task.Run(() =>
+            var result = await Task.Run(() =>
             {
                 var pinyin = nameFilter.ToPinyin();
-                return _identity
+                var query = _identity
                     .AsSortedList()
                     .Where(x =>
                     {
@@ -61,13 +68,10 @@ namespace AnotherReplayReader
                             return true;
                         }
                         return x.Id.ContainsIgnoreCase(nameFilter);
-                    })
-                    .ToArray();
+                    });
+                return new ObservableCollection<IpAndPlayer>(query);
             });
-
-            _dataGrid.Items.Clear();
-            _dataGrid.ItemsSource = newList;
-            _dataGrid.Items.Refresh();
+            _dataGrid.ItemsSource = result;
         }
 
         private async void OnClick(object sender, RoutedEventArgs e)
@@ -97,7 +101,7 @@ namespace AnotherReplayReader
                     MessageBox.Show(this, "设置 IP 表失败");
                 }
 
-                Refresh();
+                Refresh(false);
             }
             catch (Exception exception)
             {