diff --git a/rgw_pool_type/ec-cache.yaml b/rgw_pool_type/ec-cache.yaml
index fe47cb8f81c..6462fbe8862 100644
--- a/rgw_pool_type/ec-cache.yaml
+++ b/rgw_pool_type/ec-cache.yaml
@@ -2,3 +2,5 @@ overrides:
   rgw:
     ec-data-pool: true
     cache-pools: true
+  s3tests:
+    slow_backend: true
diff --git a/rgw_pool_type/ec-profile.yaml b/rgw_pool_type/ec-profile.yaml
index 8edd1b96e97..52798f85e72 100644
--- a/rgw_pool_type/ec-profile.yaml
+++ b/rgw_pool_type/ec-profile.yaml
@@ -6,3 +6,5 @@ overrides:
       k: 3
       m: 1
       ruleset-failure-domain: osd
+  s3tests:
+    slow_backend: true
diff --git a/rgw_pool_type/ec.yaml b/rgw_pool_type/ec.yaml
index 7c0c5e6a0a3..7c99b7f85c8 100644
--- a/rgw_pool_type/ec.yaml
+++ b/rgw_pool_type/ec.yaml
@@ -1,3 +1,5 @@
 overrides:
   rgw:
     ec-data-pool: true
+  s3tests:
+    slow_backend: true