diff --git a/src/DotRecast.Core/Numerics/RcVec3f.cs b/src/DotRecast.Core/Numerics/RcVec3f.cs
index a78cd59..44f5867 100644
--- a/src/DotRecast.Core/Numerics/RcVec3f.cs
+++ b/src/DotRecast.Core/Numerics/RcVec3f.cs
@@ -442,7 +442,9 @@ namespace DotRecast.Core.Numerics
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public static void Copy(ref RcVec3f @out, float[] @in, int i)
         {
-            Copy(ref @out, 0, @in, i);
+            @out.X = @in[i + 0];
+            @out.Y = @in[i + 1];
+            @out.Z = @in[i + 2];
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
@@ -454,19 +456,11 @@ namespace DotRecast.Core.Numerics
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static void Copy(float[] @out, int n, RcVec3f @in, int m)
+        public static void Copy(float[] @out, int n, RcVec3f @in)
         {
-            @out[n] = @in[m];
-            @out[n + 1] = @in[m + 1];
-            @out[n + 2] = @in[m + 2];
-        }
-
-        [MethodImpl(MethodImplOptions.AggressiveInlining)]
-        public static void Copy(ref RcVec3f @out, int n, float[] @in, int m)
-        {
-            @out[n] = @in[m];
-            @out[n + 1] = @in[m + 1];
-            @out[n + 2] = @in[m + 2];
+            @out[n + 0] = @in.X;
+            @out[n + 1] = @in.Y;
+            @out[n + 2] = @in.Z;
         }
 
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
diff --git a/src/DotRecast.Recast/RcMeshDetails.cs b/src/DotRecast.Recast/RcMeshDetails.cs
index fa3dc4e..4415716 100644
--- a/src/DotRecast.Recast/RcMeshDetails.cs
+++ b/src/DotRecast.Recast/RcMeshDetails.cs
@@ -1088,7 +1088,7 @@ namespace DotRecast.Recast
                     // Mark sample as added.
                     samples[besti * 4 + 3] = 1;
                     // Add the new sample point.
-                    RcVec3f.Copy(verts, nverts * 3, bestpt, 0);
+                    RcVec3f.Copy(verts, nverts * 3, bestpt);
                     nverts++;
 
                     // Create new triangulation.
diff --git a/test/DotRecast.Core.Test/Vector3Tests.cs b/test/DotRecast.Core.Test/Vector3Tests.cs
index dd6a7f0..5fdd4e8 100644
--- a/test/DotRecast.Core.Test/Vector3Tests.cs
+++ b/test/DotRecast.Core.Test/Vector3Tests.cs
@@ -8,7 +8,7 @@ namespace DotRecast.Core.Test;
 public class Vector3Tests
 {
     [Test]
-    [Repeat(10000)]
+    [Repeat(100000)]
     public void TestVectorLength()
     {
         var v1 = new Vector3(Random.Shared.NextSingle(), Random.Shared.NextSingle(), Random.Shared.NextSingle());
@@ -19,7 +19,7 @@ public class Vector3Tests
     }
 
     [Test]
-    [Repeat(10000)]
+    [Repeat(100000)]
     public void TestVectorSubtract()
     {
         var v1 = new Vector3(Random.Shared.NextSingle(), Random.Shared.NextSingle(), Random.Shared.NextSingle());
@@ -41,7 +41,7 @@ public class Vector3Tests
 
 
     [Test]
-    [Repeat(10000)]
+    [Repeat(100000)]
     public void TestVectorAdd()
     {
         var v1 = new Vector3(Random.Shared.NextSingle(), Random.Shared.NextSingle(), Random.Shared.NextSingle());
@@ -62,7 +62,7 @@ public class Vector3Tests
     }
 
     [Test]
-    [Repeat(10000)]
+    [Repeat(100000)]
     public void TestVectorNormalize()
     {
         var v1 = new Vector3(Random.Shared.NextSingle(), Random.Shared.NextSingle(), Random.Shared.NextSingle());
@@ -77,7 +77,7 @@ public class Vector3Tests
     }
 
     [Test]
-    [Repeat(10000)]
+    [Repeat(100000)]
     public void TestVectorCross()
     {
         var v1 = new Vector3(Random.Shared.NextSingle(), Random.Shared.NextSingle(), Random.Shared.NextSingle());