diff --git a/test/browser/agent_ticket_actions_level6_test.rb b/test/browser/agent_ticket_actions_level6_test.rb
index c7c80ec7d..311c3763d 100644
--- a/test/browser/agent_ticket_actions_level6_test.rb
+++ b/test/browser/agent_ticket_actions_level6_test.rb
@@ -29,7 +29,7 @@ class AgentTicketActionLevel6Test < TestCase
     sleep 1
 
     # submit form
-    click( css: '.content.active .js-submit' )
+    click(css: '.content.active .js-submit')
     sleep 2
 
     # check warning
@@ -45,16 +45,16 @@ class AgentTicketActionLevel6Test < TestCase
     )
 
     # submit form
-    click( css: '.content.active .js-submit' )
+    click(css: '.content.active .js-submit')
     sleep 5
 
     # no warning
     #alert = @browser.switch_to.alert
 
     # check if ticket is shown and attachment exists
-    location_check( url: '#ticket/zoom/' )
-    sleep 2
-    ticket_number = @browser.find_elements( { css: '.active .ticketZoom-header .ticket-number' } )[0].text
+    location_check(url: '#ticket/zoom/')
+    sleep 4
+    ticket_number = @browser.find_elements({ css: '.active .ticketZoom-header .ticket-number' } )[0].text
     match(
       css: '.active .ticket-article-item:nth-child(1) .attachments',
       value: 'upload2.jpg',
@@ -226,7 +226,7 @@ class AgentTicketActionLevel6Test < TestCase
     )
 
     # check if customer has changed in second browser
-    click( browser: browser1, css: '.active .tabsSidebar-tab[data-tab="customer"]')
+    click(browser: browser1, css: '.active .tabsSidebar-tab[data-tab="customer"]')
     watch_for(
       browser: browser1,
       css: '.active .tabsSidebar',
@@ -238,14 +238,14 @@ class AgentTicketActionLevel6Test < TestCase
     #
 
     # modify customer
-    click( browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions .dropdown-toggle')
-    click( browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions [data-type="customer-edit"]')
+    click(browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions .dropdown-toggle')
+    click(browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions [data-type="customer-edit"]')
     sleep 2
-    set( browser: browser1, css: '.modal [name="address"]', value: 'some new address' )
-    click( browser: browser1, css: '.modal .js-submit')
+    set(browser: browser1, css: '.modal [name="address"]', value: 'some new address')
+    click(browser: browser1, css: '.modal .js-submit')
 
     # verify is customer has chnaged other browser too
-    click( browser: browser2, css: '.active .tabsSidebar-tab[data-tab="customer"]')
+    click(browser: browser2, css: '.active .tabsSidebar-tab[data-tab="customer"]')
     watch_for(
       browser: browser2,
       css: '.active .sidebar[data-tab="customer"]',
@@ -257,18 +257,18 @@ class AgentTicketActionLevel6Test < TestCase
     #
 
     # change org of customer, check if org is shown in sidebar
-    click( browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions .dropdown-toggle')
-    click( browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions [data-type="customer-edit"]')
+    click(browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions .dropdown-toggle')
+    click(browser: browser1, css: '.active .sidebar[data-tab="customer"] .js-actions [data-type="customer-edit"]')
     sleep 2
-    set( browser: browser1, css: '.modal .js-input', value: 'zammad' )
-    click( browser: browser1, css: '.modal .js-input' )
-    click( browser: browser1, css: '.modal .js-option' )
+    set(browser: browser1, css: '.modal .js-input', value: 'zammad')
+    click(browser: browser1, css: '.modal .js-input')
+    click(browser: browser1, css: '.modal .js-option')
 
-    click( browser: browser1, css: '.modal .js-submit')
+    click(browser: browser1, css: '.modal .js-submit')
 
     # check if org has changed in second browser
     sleep 3
-    click( browser: browser2, css: '.active .tabsSidebar-tab[data-tab="organization"]')
+    click(browser: browser2, css: '.active .tabsSidebar-tab[data-tab="organization"]')
     watch_for(
       browser: browser2,
       css: '.active .sidebar[data-tab="organization"]',
diff --git a/test/unit/session_collections_test.rb b/test/unit/session_collections_test.rb
index e9ed2bd11..f165ff9a5 100644
--- a/test/unit/session_collections_test.rb
+++ b/test/unit/session_collections_test.rb
@@ -56,9 +56,9 @@ class SessionCollectionsTest < ActiveSupport::TestCase
     customer1.roles = roles
     customer1.save
 
-    collection_client1 = Sessions::Backend::Collections.new(agent1, {}, nil, 'aaa-1', 2)
-    collection_client2 = Sessions::Backend::Collections.new(agent2, {}, nil, 'bbb-2', 2)
-    collection_client2 = Sessions::Backend::Collections.new(customer1, {}, nil, 'ccc-2', 2)
+    collection_client1 = Sessions::Backend::Collections.new(agent1, {}, nil, 'aaa-1', 3)
+    collection_client2 = Sessions::Backend::Collections.new(agent2, {}, nil, 'bbb-2', 3)
+    collection_client2 = Sessions::Backend::Collections.new(customer1, {}, nil, 'ccc-2', 3)
 
     # get whole collections
     result1 = collection_client1.push
@@ -95,7 +95,7 @@ class SessionCollectionsTest < ActiveSupport::TestCase
     # change collection
     group = Group.first
     group.touch
-    sleep 3
+    sleep 4
 
     # get whole collections
     result1 = collection_client1.push