Progress bar resetting fix.

UndertaleModTool/MainWindow.xaml.cs

@@ -2303,29 +2303,40 @@ public void DisableAllSyncBindings() //disable all sync. bindings
 
         private void ProgressUpdater()
         {
-            DateTime prevTime = default;
+            Stopwatch sw = new();
+            Stopwatch swTimeout = null;
             int prevValue = 0;
 
             while (true)
             {
+                sw.Restart();
+
                 if (cToken.IsCancellationRequested)
                 {
-                    if (prevValue >= progressValue) //if reached maximum
+                    if (prevValue >= progressValue) // if reached maximum
+                    {
+                        sw.Stop();
+                        swTimeout?.Stop();
                         return;
+                    }
                     else
                     {
-                        if (prevTime == default)
-                            prevTime = DateTime.UtcNow;                                       //begin measuring
-                        else if (DateTime.UtcNow.Subtract(prevTime).TotalMilliseconds >= 500) //timeout - 0.5 seconds
+                        if (swTimeout is null)
+                            swTimeout = Stopwatch.StartNew();          // begin measuring
+                        else if (swTimeout.ElapsedMilliseconds >= 500) // timeout - 0.5 seconds
+                        {
+                            sw.Stop();
+                            swTimeout.Stop();
                             return;
+                        }
                     }
                 }
 
                 UpdateProgressValue(progressValue);
 
                 prevValue = progressValue;
 
-                Thread.Sleep(100); //10 times per second
+                Thread.Sleep((int)Math.Max(0, 33 - sw.ElapsedMilliseconds)); // ~30 times per second
             }
         }
         public void StartProgressBarUpdater()

UndertaleModTool/Windows/LoaderDialog.xaml.cs

@@ -149,16 +149,7 @@ public void ReportProgress(double value) //update without status text changing
         }
         public void UpdateValue(double value)
         {
-            if (value - ProgressBar.Value <= 1) //if value not changed or changed by 1
-            {
-                ProgressBar.Value = value;
-            }
-            else
-            {
-                DoubleAnimation animation = new(value, TimeSpan.FromMilliseconds(100)); //time is the same as in "ProgressUpdater()"
-                ProgressBar.BeginAnimation(ProgressBar.ValueProperty, animation);       //smooth progress change
-            }
-
+            ProgressBar.Value = value;
             TaskbarItemInfo.ProgressValue = value / ProgressBar.Maximum;
         }