diff --git a/noxfile.py b/noxfile.py
index fc0ed6c5..f1ce03c7 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -373,6 +373,7 @@ def compliance(session):
     session.install(
         "mock",
         "pytest",
+        "pytest-xdist",
         "pytest-rerunfailures",
         "google-cloud-testutils",
         "-c",
@@ -392,13 +393,16 @@ def compliance(session):
         "py.test",
         "-vv",
         f"--junitxml=compliance_{session.python}_sponge_log.xml",
-        "--reruns=3",
-        "--reruns-delay=60",
+        "--reruns=1",
+        "--reruns-delay=5",
         "--only-rerun=Exceeded rate limits",
         "--only-rerun=Already Exists",
         "--only-rerun=Not found",
         "--only-rerun=Cannot execute DML over a non-existent table",
         "--only-rerun=Job exceeded rate limits",
+        "--durations=50",  # shows duration of slowest 50 tests
+        "--dist=loadscope",
+        "--numprocesses=auto",
         system_test_folder_path,
         *session.posargs,
         # To suppress the "Deprecated API features detected!" warning when
diff --git a/owlbot.py b/owlbot.py
index 32655856..734bdfa8 100644
--- a/owlbot.py
+++ b/owlbot.py
@@ -198,7 +198,7 @@ def compliance(session):
         "--only-rerun=Not found",
         "--only-rerun=Cannot execute DML over a non-existent table",
         "--only-rerun=Job exceeded rate limits",
-        "--durations=50",
+        "--durations=50",  # shows duration of slowest 50 tests
         "--dist=loadscope",
         "--numprocesses=auto",
         system_test_folder_path,