diff --git a/tools/run_tests/performance/scenario_config.py b/tools/run_tests/performance/scenario_config.py
index 77b158f27e1..c52c061c9d7 100644
--- a/tools/run_tests/performance/scenario_config.py
+++ b/tools/run_tests/performance/scenario_config.py
@@ -93,6 +93,7 @@ def remove_nonproto_fields(scenario):
 def _ping_pong_scenario(name, rpc_type,
                         client_type, server_type,
                         secure=True,
+                        use_big_generic_payload=False,
                         use_generic_payload=False,
                         unconstrained_client=None,
                         client_language=None,
@@ -127,7 +128,12 @@ def _ping_pong_scenario(name, rpc_type,
     'warmup_seconds': warmup_seconds,
     'benchmark_seconds': BENCHMARK_SECONDS
   }
-  if use_generic_payload:
+  if use_big_generic_payload:
+    if server_type != 'ASYNC_GENERIC_SERVER':
+      raise Exception('Use ASYNC_GENERIC_SERVER for big generic payload.')
+    scenario['client_config']['payload_config'] = BIG_GENERIC_PAYLOAD
+    scenario['server_config']['payload_config'] = BIG_GENERIC_PAYLOAD    
+  elif use_generic_payload:
     if server_type != 'ASYNC_GENERIC_SERVER':
       raise Exception('Use ASYNC_GENERIC_SERVER for generic payload.')
     scenario['client_config']['payload_config'] = EMPTY_GENERIC_PAYLOAD
@@ -140,13 +146,23 @@ def _ping_pong_scenario(name, rpc_type,
     if unconstrained_client == 'async':
       deep = DEEP
       wide = WIDE
+      num_clients = 0 # use as many clients as available
     elif unconstrained_client == 'sync':
       deep = SYNC_DEEP
       wide = SYNC_WIDE
+      num_clients = 0 # use as many clients as available
+    elif unconstrained_client == '1chan_bw':
+      deep = DEEP
+      wide = 1
+      num_clients = 1 # limit to 1 for a single channel
+    elif unconstrained_client == 'Nchan_bw':
+      deep = DEEP
+      wide = WIDE
+      num_clients = 0 # use as many clients as available
     else:
       raise Exception('Illegal value of unconstrained_client option.')
 
-    scenario['num_clients'] = 0  # use as many client as available.
+    scenario['num_clients'] = num_clients
     scenario['client_config']['outstanding_rpcs_per_channel'] = deep
     scenario['client_config']['client_channels'] = wide
     scenario['client_config']['async_client_threads'] = 0
@@ -236,6 +252,19 @@ class CXXLanguage:
           server_core_limit=1, async_server_threads=1,
           secure=secure)
 
+      yield _ping_pong_scenario(
+          'cpp_generic_async_streaming_single_channel_throughput_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          unconstrained_client='1chan_bw', use_big_generic_payload=True,
+          secure=secure,
+          categories=smoketest_categories)
+
+      yield _ping_pong_scenario(
+          'cpp_generic_async_streaming_multi_channel_throughput_%s' % secstr, rpc_type='STREAMING',
+          client_type='ASYNC_CLIENT', server_type='ASYNC_GENERIC_SERVER',
+          unconstrained_client='Nchan_bw', use_big_generic_payload=True,
+          secure=secure)
+
   def __str__(self):
     return 'c++'
 
diff --git a/tools/run_tests/tests.json b/tools/run_tests/tests.json
index 10674d22b31..a9fffd33b4f 100644
--- a/tools/run_tests/tests.json
+++ b/tools/run_tests/tests.json
@@ -23227,6 +23227,58 @@
     ], 
     "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_one_server_core_secure"
   }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_generic_async_streaming_single_channel_throughput_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_single_channel_throughput_secure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_generic_async_streaming_multi_channel_throughput_secure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": {\"use_test_ca\": true, \"server_host_override\": \"foo.test.google.fr\"}, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_multi_channel_throughput_secure"
+  }, 
   {
     "args": [
       "--scenario_json", 
@@ -23435,6 +23487,58 @@
     ], 
     "shortname": "json_run_localhost:cpp_generic_async_streaming_qps_one_server_core_insecure"
   }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_generic_async_streaming_single_channel_throughput_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 1, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 1}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_single_channel_throughput_insecure"
+  }, 
+  {
+    "args": [
+      "--scenario_json", 
+      "'{\"name\": \"cpp_generic_async_streaming_multi_channel_throughput_insecure\", \"warmup_seconds\": 5, \"benchmark_seconds\": 30, \"num_servers\": 1, \"server_config\": {\"async_server_threads\": 0, \"core_limit\": 0, \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"server_type\": \"ASYNC_GENERIC_SERVER\"}, \"client_config\": {\"client_type\": \"ASYNC_CLIENT\", \"security_params\": null, \"payload_config\": {\"bytebuf_params\": {\"resp_size\": 65536, \"req_size\": 65536}}, \"client_channels\": 64, \"async_client_threads\": 0, \"outstanding_rpcs_per_channel\": 100, \"rpc_type\": \"STREAMING\", \"load_params\": {\"closed_loop\": {}}, \"histogram_params\": {\"max_possible\": 60000000000.0, \"resolution\": 0.01}}, \"num_clients\": 0}'"
+    ], 
+    "boringssl": true, 
+    "ci_platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "cpu_cost": 1000.0, 
+    "defaults": "boringssl", 
+    "exclude_configs": [], 
+    "flaky": false, 
+    "language": "c++", 
+    "name": "json_run_localhost", 
+    "platforms": [
+      "linux", 
+      "mac", 
+      "posix", 
+      "windows"
+    ], 
+    "shortname": "json_run_localhost:cpp_generic_async_streaming_multi_channel_throughput_insecure"
+  }, 
   {
     "args": [
       "test/core/end2end/fuzzers/api_fuzzer_corpus/00.bin"