diff --git a/.circleci/config.yml b/.circleci/config.yml
index cee0d292905..bbe2d301681 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -28,11 +28,13 @@ executors:
     environment:
       GRADLE_OPTS: -Dorg.gradle.daemon=false -Dorg.gradle.parallel=true -Dorg.gradle.workers.max=4
       
-  quorum_ats_executor_med:
+  quorum_ats_executor_xl:
     docker:
       - image: cimg/openjdk:11.0
-    resource_class: medium
+    resource_class: xlarge
     working_directory: ~/project
+    environment:
+      GRADLE_OPTS: -Dorg.gradle.daemon=false
 
   xl_machine_executor:
     machine:
@@ -266,7 +268,8 @@ jobs:
       - capture_test_logs
 
   acceptanceTestsQuorum:
-    executor: quorum_ats_executor_med
+    parallelism: 1
+    executor: quorum_ats_executor_xl
     steps:
       - attach_workspace:
           at: ~/project