fix.修复了一些界面的性能问题

src/MeoAsstGui/ViewModels/SettingsViewModel.cs

@@ -1050,10 +1050,10 @@ namespace MeoAsstGui
             }
         }
 
-        public void ManualUpdate()
+        public async void ManualUpdate()
         {
             var updateModle = _container.Get<VersionUpdateViewModel>();
-            Task.Run(() =>
+            var task = Task.Run(() =>
             {
                 if (!updateModle.CheckAndDownloadUpdate(true)
                     && !updateModle.ResourceOTA(true))
@@ -1064,6 +1064,7 @@ namespace MeoAsstGui
                     }
                 }
             });
+            await task;
         }
 
         /* 连接设置 */

src/MeoAsstGui/ViewModels/TaskQueueViewModel.cs

@@ -647,11 +647,9 @@ namespace MeoAsstGui
             {
                 return a.Value.CompareTo(b.Value);
             });
-            AllDropsList = new ObservableCollection<CombData>(AllDrops);
-            DropsList = AllDropsList;
+            DropsList = new ObservableCollection<CombData>(AllDrops);
         }
 
-        public ObservableCollection<CombData> AllDropsList { get; set; }
         public ObservableCollection<CombData> DropsList { get; set; }
 
         private string _dropsItemId = ViewStatusStorage.Get("MainFunction.Drops.ItemId", "0");
@@ -665,15 +663,31 @@ namespace MeoAsstGui
             }
         }
 
-        //这里可以选择从gui.json里取上一次的选择(?)
         private string _dropsItem = "";
+        private bool _isFirstLoadDropItem = true;
+        private long _preSetDropsItemTicks = 0;
 
         public string DropsItem
         {
             get { return _dropsItem; }
             set
             {
-                IsDropDown = "True";
+                if (_isFirstLoadDropItem)
+                {
+                    _isFirstLoadDropItem = false;
+                }
+                else
+                {
+                    IsDropDown = true;
+                }
+
+                // 这里有个很严重的死循环性能问题，不知道怎么解决，简单做个消抖好了_(:з」∠)_
+                if (DateTime.Now.Ticks - _preSetDropsItemTicks < 50)
+                {
+                    return;
+                }
+                _preSetDropsItemTicks = DateTime.Now.Ticks;
+
                 DropsList.Clear();
                 foreach (CombData drop in AllDrops)
                 {
@@ -687,9 +701,9 @@ namespace MeoAsstGui
             }
         }
 
-        private string _isDropDown = "False";
+        private bool _isDropDown = false;
 
-        public string IsDropDown
+        public bool IsDropDown
         {
             get { return _isDropDown; }
             set