diff --git a/src/FrostFS.SDK.ClientV2/Services/Container.cs b/src/FrostFS.SDK.ClientV2/Services/Container.cs
index 6e29a8f..fbd29a7 100644
--- a/src/FrostFS.SDK.ClientV2/Services/Container.cs
+++ b/src/FrostFS.SDK.ClientV2/Services/Container.cs
@@ -21,6 +21,7 @@ public partial class Client
         return response.Body.Container.ToModel();
     }
 
+    //TODO: Return iterator
     public async Task<ContainerId[]> ListContainersAsync()
     {
         var request = new ListRequest
diff --git a/src/FrostFS.SDK.ClientV2/Services/Object.cs b/src/FrostFS.SDK.ClientV2/Services/Object.cs
index 4136f28..8dbbe8a 100644
--- a/src/FrostFS.SDK.ClientV2/Services/Object.cs
+++ b/src/FrostFS.SDK.ClientV2/Services/Object.cs
@@ -132,7 +132,7 @@ public partial class Client
 
         using var stream = await PutObjectInit(request);
         var buffer = new byte[Constants.ObjectChunkSize];
-        var bufferLength = payload.Read(buffer, 0, Constants.ObjectChunkSize);
+        var bufferLength = await payload.ReadAsync(buffer.AsMemory(0, Constants.ObjectChunkSize));
         while (bufferLength > 0)
         {
             request.Body = new PutRequest.Types.Body
@@ -142,7 +142,7 @@ public partial class Client
             request.VerifyHeader = null;
             request.Sign(_key);
             await stream.Write(request);
-            bufferLength = payload.Read(buffer, 0, Constants.ObjectChunkSize);
+            bufferLength = await payload.ReadAsync(buffer.AsMemory(0, Constants.ObjectChunkSize));
         }
 
         var response = await stream.Close();
@@ -179,6 +179,7 @@ public partial class Client
         await _objectServiceClient.DeleteAsync(request);
     }
 
+    //TODO: Return iterator
     public async Task<ObjectId[]> SearchObjectAsync(ContainerId cid, params ObjectFilter[] filters)
     {
         var request = new SearchRequest