diff --git a/.github/workflows/build_and_test.yml b/.github/workflows/build_and_test.yml
index 86dbf702..919ba5f0 100644
--- a/.github/workflows/build_and_test.yml
+++ b/.github/workflows/build_and_test.yml
@@ -34,7 +34,7 @@ jobs:
           - os: macos-latest
             sudo-command: "sudo"
             bazel-command: "bazelisk"
-            bazel-config: ""
+            bazel-config: "--config=asan --copt -U_FORTIFY_SOURCE --copt=-D_FORTIFY_SOURCE=1"
             output-user_root: ""
           - os: ubuntu-latest
             sudo-command: "sudo"
diff --git a/test/grpc/streaming/streaming.cc b/test/grpc/streaming/streaming.cc
index 048c3a1f..4f4b0b6a 100644
--- a/test/grpc/streaming/streaming.cc
+++ b/test/grpc/streaming/streaming.cc
@@ -66,6 +66,8 @@ void test_client_behavior(
       ::grpc::InsecureChannelCredentials(),
       pool.Borrow());
 
+  // We are taking 'Task' instead of template here because of perfomance things.
+  // We are limited by the environment, so it allows to use less resourses.
   auto call = [&]() -> Task::Of<::grpc::Status>::Raises<RuntimeError> {
     return [&]() {
       return client.Call<
diff --git a/test/grpc/streaming/streaming.h b/test/grpc/streaming/streaming.h
index c0b23981..b5ddc71b 100644
--- a/test/grpc/streaming/streaming.h
+++ b/test/grpc/streaming/streaming.h
@@ -41,6 +41,9 @@ using stout::Borrowable;
 //     _[AfterReply|BeforeReply]
 //     _[OneRequest|TwoRequests]
 
+// We are taking 'Task' instead of template here because of perfomance things.
+// Environment we are running on has some RAM limits, so it allows to use less
+// resourses while building.
 void test_client_behavior(
     Task::From<
         ClientCall<