diff --git a/TUnit.Core/Attributes/TestData/AsyncDataSourceGeneratorAttribute.cs b/TUnit.Core/Attributes/TestData/AsyncDataSourceGeneratorAttribute.cs
index 8045badda6..f1d7601aee 100644
--- a/TUnit.Core/Attributes/TestData/AsyncDataSourceGeneratorAttribute.cs
+++ b/TUnit.Core/Attributes/TestData/AsyncDataSourceGeneratorAttribute.cs
@@ -7,12 +7,9 @@ public abstract class AsyncDataSourceGeneratorAttribute<[DynamicallyAccessedMemb
 {
     protected abstract IAsyncEnumerable<Func<Task<T>>> GenerateDataSourcesAsync(DataGeneratorMetadata dataGeneratorMetadata);
 
-    public sealed override async IAsyncEnumerable<Func<Task<T>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
+    public sealed override IAsyncEnumerable<Func<Task<T>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
     {
-        await foreach (var generateDataSource in GenerateDataSourcesAsync(dataGeneratorMetadata))
-        {
-            yield return generateDataSource;
-        }
+        return GenerateDataSourcesAsync(dataGeneratorMetadata);
     }
 }
 
@@ -25,12 +22,9 @@ public abstract class AsyncDataSourceGeneratorAttribute<
 {
     protected abstract IAsyncEnumerable<Func<Task<(T1, T2)>>> GenerateDataSourcesAsync(DataGeneratorMetadata dataGeneratorMetadata);
 
-    public sealed override async IAsyncEnumerable<Func<Task<(T1, T2)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
+    public sealed override IAsyncEnumerable<Func<Task<(T1, T2)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
     {
-        await foreach (var generateDataSource in GenerateDataSourcesAsync(dataGeneratorMetadata))
-        {
-            yield return generateDataSource;
-        }
+        return GenerateDataSourcesAsync(dataGeneratorMetadata);
     }
 }
 
@@ -45,12 +39,9 @@ public abstract class AsyncDataSourceGeneratorAttribute<
 {
     protected abstract IAsyncEnumerable<Func<Task<(T1, T2, T3)>>> GenerateDataSourcesAsync(DataGeneratorMetadata dataGeneratorMetadata);
 
-    public sealed override async IAsyncEnumerable<Func<Task<(T1, T2, T3)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
+    public sealed override IAsyncEnumerable<Func<Task<(T1, T2, T3)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
     {
-        await foreach (var generateDataSource in GenerateDataSourcesAsync(dataGeneratorMetadata))
-        {
-            yield return generateDataSource;
-        }
+        return GenerateDataSourcesAsync(dataGeneratorMetadata);
     }
 }
 
@@ -67,12 +58,9 @@ public abstract class AsyncDataSourceGeneratorAttribute<
 {
     protected abstract IAsyncEnumerable<Func<Task<(T1, T2, T3, T4)>>> GenerateDataSourcesAsync(DataGeneratorMetadata dataGeneratorMetadata);
 
-    public override async IAsyncEnumerable<Func<Task<(T1, T2, T3, T4)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
+    public override IAsyncEnumerable<Func<Task<(T1, T2, T3, T4)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
     {
-        await foreach (var generateDataSource in GenerateDataSourcesAsync(dataGeneratorMetadata))
-        {
-            yield return generateDataSource;
-        }
+        return GenerateDataSourcesAsync(dataGeneratorMetadata);
     }
 }
 
@@ -91,11 +79,8 @@ public abstract class AsyncDataSourceGeneratorAttribute<
 {
     protected abstract IAsyncEnumerable<Func<Task<(T1, T2, T3, T4, T5)>>> GenerateDataSourcesAsync(DataGeneratorMetadata dataGeneratorMetadata);
 
-    public override async IAsyncEnumerable<Func<Task<(T1, T2, T3, T4, T5)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
+    public override IAsyncEnumerable<Func<Task<(T1, T2, T3, T4, T5)>>> GetTypedDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
     {
-        await foreach (var generateDataSource in GenerateDataSourcesAsync(dataGeneratorMetadata))
-        {
-            yield return generateDataSource;
-        }
+        return GenerateDataSourcesAsync(dataGeneratorMetadata);
     }
 }
diff --git a/TUnit.Core/Attributes/TestData/AsyncUntypedDataSourceSourceGeneratorAttribute.cs b/TUnit.Core/Attributes/TestData/AsyncUntypedDataSourceSourceGeneratorAttribute.cs
index 033f74c33f..88ae04b9c0 100644
--- a/TUnit.Core/Attributes/TestData/AsyncUntypedDataSourceSourceGeneratorAttribute.cs
+++ b/TUnit.Core/Attributes/TestData/AsyncUntypedDataSourceSourceGeneratorAttribute.cs
@@ -10,14 +10,11 @@ public abstract class AsyncUntypedDataSourceGeneratorAttribute : Attribute, IAsy
 
     protected abstract IAsyncEnumerable<Func<Task<object?[]?>>> GenerateDataSourcesAsync(DataGeneratorMetadata dataGeneratorMetadata);
 
-    public async IAsyncEnumerable<Func<Task<object?[]?>>> GenerateAsync(DataGeneratorMetadata dataGeneratorMetadata)
+    public IAsyncEnumerable<Func<Task<object?[]?>>> GenerateAsync(DataGeneratorMetadata dataGeneratorMetadata)
     {
         // Data source initialization is now handled externally by DataSourceInitializer
         // This follows SRP - the attribute is only responsible for generating data, not initialization
-        await foreach (var generateDataSource in GenerateDataSourcesAsync(dataGeneratorMetadata))
-        {
-            yield return generateDataSource;
-        }
+        return GenerateDataSourcesAsync(dataGeneratorMetadata);
     }
 
     public IAsyncEnumerable<Func<Task<object?[]?>>> GetDataRowsAsync(DataGeneratorMetadata dataGeneratorMetadata)
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt
index 40d0c07e34..771e4b26fe 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet10_0.verified.txt
@@ -140,7 +140,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<T>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<T>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -148,7 +147,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -156,7 +154,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2, T3>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -164,7 +161,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -172,7 +168,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4, T5>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4, T5>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4, T5>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     public class AsyncEvent<TEventArgs>
@@ -195,7 +190,6 @@ namespace
     {
         protected AsyncUntypedDataSourceGeneratorAttribute() { }
         public virtual bool SkipIfEmpty { get; set; }
-        [.(typeof(.AsyncUntypedDataSourceGeneratorAttribute.<GenerateAsync>d__5))]
         public .<<.<object?[]?>>> GenerateAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
         protected abstract .<<.<object?[]?>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
         public .<<.<object?[]?>>> GetDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt
index 9fb37db4dd..d1fb7c0a3f 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet8_0.verified.txt
@@ -140,7 +140,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<T>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<T>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -148,7 +147,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -156,7 +154,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2, T3>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -164,7 +161,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -172,7 +168,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4, T5>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4, T5>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4, T5>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     public class AsyncEvent<TEventArgs>
@@ -195,7 +190,6 @@ namespace
     {
         protected AsyncUntypedDataSourceGeneratorAttribute() { }
         public virtual bool SkipIfEmpty { get; set; }
-        [.(typeof(.AsyncUntypedDataSourceGeneratorAttribute.<GenerateAsync>d__5))]
         public .<<.<object?[]?>>> GenerateAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
         protected abstract .<<.<object?[]?>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
         public .<<.<object?[]?>>> GetDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt
index 993b818cff..0c1d2db153 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.DotNet9_0.verified.txt
@@ -140,7 +140,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<T>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<T>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -148,7 +147,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -156,7 +154,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2, T3>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -164,7 +161,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -172,7 +168,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4, T5>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4, T5>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4, T5>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     public class AsyncEvent<TEventArgs>
@@ -195,7 +190,6 @@ namespace
     {
         protected AsyncUntypedDataSourceGeneratorAttribute() { }
         public virtual bool SkipIfEmpty { get; set; }
-        [.(typeof(.AsyncUntypedDataSourceGeneratorAttribute.<GenerateAsync>d__5))]
         public .<<.<object?[]?>>> GenerateAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
         protected abstract .<<.<object?[]?>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
         public .<<.<object?[]?>>> GetDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
diff --git a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt
index 2d5ec6f128..56031f16d2 100644
--- a/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt
+++ b/TUnit.PublicAPI/Tests.Core_Library_Has_No_API_Changes.Net4_7.verified.txt
@@ -137,7 +137,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<T>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<T>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -145,7 +144,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -153,7 +151,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3>.<GetTypedDataRowsAsync>d__1))]
         public override sealed .<<.<<T1, T2, T3>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -161,7 +158,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     [(.Class | .Method, AllowMultiple=true)]
@@ -169,7 +165,6 @@ namespace
     {
         protected AsyncDataSourceGeneratorAttribute() { }
         protected abstract .<<.<<T1, T2, T3, T4, T5>>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
-        [.(typeof(.AsyncDataSourceGeneratorAttribute<T1, T2, T3, T4, T5>.<GetTypedDataRowsAsync>d__1))]
         public override .<<.<<T1, T2, T3, T4, T5>>>> GetTypedDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
     }
     public class AsyncEvent<TEventArgs>
@@ -192,7 +187,6 @@ namespace
     {
         protected AsyncUntypedDataSourceGeneratorAttribute() { }
         public virtual bool SkipIfEmpty { get; set; }
-        [.(typeof(.AsyncUntypedDataSourceGeneratorAttribute.<GenerateAsync>d__5))]
         public .<<.<object?[]?>>> GenerateAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }
         protected abstract .<<.<object?[]?>>> GenerateDataSourcesAsync(.DataGeneratorMetadata dataGeneratorMetadata);
         public .<<.<object?[]?>>> GetDataRowsAsync(.DataGeneratorMetadata dataGeneratorMetadata) { }