diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 26d499dba..13bf7bb7b 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -160,7 +160,7 @@ job_integration_autowizard:
     - ruby -I test/ test/integration/auto_wizard_test.rb || script/build/test_shutdown.sh $RAILS_ENV 3011 3012 1
     - script/build/test_shutdown.sh $RAILS_ENV 3011 3012
 
-job_integration_browser_ff:
+job_integration_browser_ff_1:
   stage: browser
   script:
     - export RAILS_ENV=production
@@ -170,8 +170,9 @@ job_integration_browser_ff:
     - export REMOTE_URL=http://192.168.122.175:4445/wd/hub
     - export BROWSER=firefox
     - export RAILS_SERVE_STATIC_FILES=true
-    - script/build/test_db_config.sh production ci_zammad_browser_ff
-    - script/build/test_db_config.sh test ci_zammad_browser_ff_test
+    - script/build/test_db_config.sh production ci_zammad_browser_ff_1
+    - script/build/test_db_config.sh test ci_zammad_browser_ff_1_test
+    - script/build/test_slice_tests.sh 1
     - RAILS_ENV=test rake db:create
     - script/bootstrap.sh
     - rake assets:precompile
diff --git a/script/build/test_slice_tests.sh b/script/build/test_slice_tests.sh
new file mode 100755
index 000000000..c3a10a120
--- /dev/null
+++ b/script/build/test_slice_tests.sh
@@ -0,0 +1,66 @@
+#!/bin/bash
+LEVEL=$1
+
+if [ "$LEVEL" == '1' ]; then
+  echo "slicing level 1"
+
+  # no ticket action
+  rm test/browser/agent_user_profile_test.rb
+  rm test/browser/agent_organization_profile_test.rb
+  rm test/browser/agent_ticket_*.rb
+  rm test/browser/prefereces_test.rb
+  rm test/browser/setting_test.rb
+
+  unset MAILBOX_AUTO1
+  unset MAILBOX_AUTO2
+  unset MAILBOX_MANUAL1
+  unset MAILBOX_MANUAL2
+
+elif [ "$LEVEL" == '2' ]; then
+  echo "slicing level 2"
+
+  # only ticket action
+  rm test/browser/aab_unit_test.rb
+  rm test/browser/aac_basic_richtext_test.rb
+  rm test/browser/agent_organization_profile_test.rb
+  rm test/browser/agent_user_*.rb
+  rm test/browser/auth_test.rb
+  rm test/browser/chat_test.rb
+  rm test/browser/customer_ticket_create_test.rb
+  rm test/browser/maintenance_message_test.rb
+  rm test/browser/manage_test.rb
+  rm test/browser/prefereces_test.rb
+  rm test/browser/setting_test.rb
+  rm test/browser/signup_password_change_and_reset_test.rb
+  rm test/browser/taskbar_session_test.rb
+  rm test/browser/taskbar_task_test.rb
+  rm test/browser/switch_to_user_test.rb
+
+  unset MAILBOX_AUTO1
+  unset MAILBOX_AUTO2
+  unset MAILBOX_MANUAL1
+  unset MAILBOX_MANUAL2
+
+elif [ "$LEVEL" == '3' ]; then
+  echo "slicing level 3"
+
+  # only profile action
+  rm test/browser/aab_unit_test.rb
+  rm test/browser/aac_basic_richtext_test.rb
+  rm test/browser/agent_user_manage_test.rb
+  rm test/browser/agent_ticket_*.rb
+  rm test/browser/auth_test.rb
+  rm test/browser/chat_test.rb
+  rm test/browser/customer_ticket_create_test.rb
+  rm test/browser/maintenance_message_test.rb
+  rm test/browser/manage_test.rb
+  rm test/browser/signup_password_change_and_reset_test.rb
+  rm test/browser/taskbar_session_test.rb
+  rm test/browser/taskbar_task_test.rb
+  rm test/browser/switch_to_user_test.rb
+
+else
+  echo "ERROR: Invalid level $LEVEL - 1, 2 or 3 is available"
+  exit 1
+fi
+