diff --git a/test_runner/performance/pageserver/pagebench/test_ondemand_download_churn.py b/test_runner/performance/pageserver/pagebench/test_ondemand_download_churn.py
index 644c1f559b..0348b08f04 100644
--- a/test_runner/performance/pageserver/pagebench/test_ondemand_download_churn.py
+++ b/test_runner/performance/pageserver/pagebench/test_ondemand_download_churn.py
@@ -62,6 +62,9 @@ def test_download_churn(
 
     run_benchmark(env, pg_bin, record, io_engine, concurrency_per_target, duration)
 
+    # see https://github.com/neondatabase/neon/issues/8712
+    env.stop(immediate=True)
+
 
 def setup_env(neon_env_builder: NeonEnvBuilder, pg_bin: PgBin):
     remote_storage_kind = s3_storage()
diff --git a/test_runner/performance/test_layer_map.py b/test_runner/performance/test_layer_map.py
index 9b20954d45..890b70b9fc 100644
--- a/test_runner/performance/test_layer_map.py
+++ b/test_runner/performance/test_layer_map.py
@@ -36,3 +36,6 @@ def test_layer_map(neon_env_builder: NeonEnvBuilder, zenbenchmark):
     with zenbenchmark.record_duration("test_query"):
         cur.execute("SELECT count(*) from t")
         assert cur.fetchone() == (n_iters * n_records,)
+
+    # see https://github.com/neondatabase/neon/issues/8712
+    env.stop(immediate=True)