diff --git a/core/drupalci.yml b/core/drupalci.yml
index 1b44657a056..bf5a19f5336 100644
--- a/core/drupalci.yml
+++ b/core/drupalci.yml
@@ -3,51 +3,26 @@
 # https://www.drupal.org/drupalorg/docs/drupal-ci/customizing-drupalci-testing
 _phpunit_testgroups_to_execute: &testgroups
   # Default: all of Drupal core's test suite runs.
-  testgroups: '--all'
+  testgroups: '--repeat 50 --class "\Drupal\Tests\media\FunctionalJavascript\MediaStandardProfileTest"'
   # Alternative: run only the tests for one particular module.
   # testgroups: '--module ckeditor5'
 build:
   assessment:
     testing:
-      # Run code quality checks.
-      container_command.commit-checks:
+      # Prevent docker from copying "search us-west-2.compute.internal" to the
+      # container's resolv.conf. This entry results eventually results in AWS
+      # throttling DNS queries and breaking PHPUnit-FunctionalJavascript tests.
+      # @todo https://www.drupal.org/i/3316016 Fix in DrupalCI.
+      container_command.dns_fix:
         commands:
-          - "core/scripts/dev/commit-code-check.sh --drupalci"
-        halt-on-fail: true
-      # run_tests task is executed several times in order of performance speeds.
-      # halt-on-fail can be set on the run_tests tasks in order to fail fast.
-      # suppress-deprecations is false in order to be alerted to usages of
-      # deprecated code.
-      run_tests.phpunit:
-        types: 'PHPUnit-Unit'
-        suppress-deprecations: false
-        halt-on-fail: false
-        <<: *testgroups
-      run_tests.kernel:
-        types: 'PHPUnit-Kernel'
-        suppress-deprecations: false
+          - "cp /etc/resolv.conf /etc/resolv.conf.old"
+          - "grep -v \"^search\" /etc/resolv.conf.old > /etc/resolv.conf "
+          - "cat /etc/resolv.conf"
+          - "/etc/init.d/networking restart"
         halt-on-fail: false
-        <<: *testgroups
-      run_tests.build:
-        # Limit concurrency due to disk space concerns.
-        concurrency: 15
-        types: 'PHPUnit-Build'
-        suppress-deprecations: false
-        halt-on-fail: false
-        <<: *testgroups
-      run_tests.functional:
-        types: 'PHPUnit-Functional'
-        suppress-deprecations: false
-        halt-on-fail: false
-        <<: *testgroups
       run_tests.javascript:
-        # Reduced from 15 due to potential DNS throttling issues on AWS.
-        # @see https://www.drupal.org/project/drupal/issues/3045612
-        concurrency: 10
+        concurrency: 15
         types: 'PHPUnit-FunctionalJavascript'
         suppress-deprecations: false
         halt-on-fail: false
         <<: *testgroups
-      # Run nightwatch testing.
-      # @see https://www.drupal.org/project/drupal/issues/2869825
-      nightwatchjs: {}