diff --git a/tests/retry_config_contract.py b/tests/retry_config_contract.py
index 059c330..5a6b60a 100644
--- a/tests/retry_config_contract.py
+++ b/tests/retry_config_contract.py
@@ -108,10 +108,11 @@ def run_case(name, mode, count, workers, host_workers, expected_peak, min_peak=N
                 # retry workers share an Io thread pool with the firehose
                 # reconnect and accept loops. A small cap is saturated
                 # regardless, so those cases still assert equality; the
-                # 16-worker default reproducibly peaks at 13-14 on a 32-core
-                # Linux box while hitting 16 on macOS. Assert the ceiling holds
-                # and that the default is still far above the explicit caps --
-                # pinning the exact overlap only asserts the scheduler.
+                # 16-worker default was observed at 13, 14, 14, 16 and 16 across
+                # runs on one idle 32-core box, so the overlap is scheduling
+                # noise rather than a property of the host. Assert the ceiling
+                # holds and that the default stays far above the explicit caps
+                # -- pinning the exact overlap only asserts the scheduler.
                 assert State.peak <= expected_peak, (name, State.peak, text)
                 assert State.peak >= (expected_peak if min_peak is None else min_peak), (
                     name, State.peak, text,