Pitch steps 5 to 10

Author: keirokeer

OpenUtau.Core/Util/Preferences.cs

@@ -145,7 +145,7 @@ public class SerializablePreferences {
             public double DiffSingerDepth = 1.0;
             public int DiffSingerSteps = 20;
             public int DiffSingerStepsVariance = 20;
-            public int DiffSingerStepsPitch = 5;
+            public int DiffSingerStepsPitch = 10;
             public bool DiffSingerTensorCache = true;
             public bool SkipRenderingMutedTracks = false;
             public string Language = string.Empty;