diff --git a/addons/api/testem.js b/addons/api/testem.js
index fca63a5fe..25230d2b8 100644
--- a/addons/api/testem.js
+++ b/addons/api/testem.js
@@ -17,6 +17,12 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        // Disable backgrounding renders for occluded windows
+        '--disable-backgrounding-occluded-windows',
+        // Disable renderer process backgrounding
+        '--disable-renderer-backgrounding',
+        // Disable task throttling of timer tasks from background pages
+        '--disable-background-timer-throttling',
         '--disable-dev-shm-usage',
         '--disable-gpu',
         //'--disable-software-rasterizer',
diff --git a/addons/auth/testem.js b/addons/auth/testem.js
index 7a9dd86c5..89e03073d 100644
--- a/addons/auth/testem.js
+++ b/addons/auth/testem.js
@@ -17,6 +17,12 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        // Disable backgrounding renders for occluded windows
+        '--disable-backgrounding-occluded-windows',
+        // Disable renderer process backgrounding
+        '--disable-renderer-backgrounding',
+        // Disable task throttling of timer tasks from background pages
+        '--disable-background-timer-throttling',
         '--disable-dev-shm-usage',
         '--disable-gpu',
         //'--disable-software-rasterizer',
diff --git a/addons/core/testem.js b/addons/core/testem.js
index 9c05858ca..792cdd3dd 100644
--- a/addons/core/testem.js
+++ b/addons/core/testem.js
@@ -17,6 +17,12 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        // Disable backgrounding renders for occluded windows
+        '--disable-backgrounding-occluded-windows',
+        // Disable renderer process backgrounding
+        '--disable-renderer-backgrounding',
+        // Disable task throttling of timer tasks from background pages
+        '--disable-background-timer-throttling',
         '--disable-dev-shm-usage',
         '--disable-software-rasterizer',
         '--mute-audio',
diff --git a/addons/rose/testem.js b/addons/rose/testem.js
index fca63a5fe..25230d2b8 100644
--- a/addons/rose/testem.js
+++ b/addons/rose/testem.js
@@ -17,6 +17,12 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        // Disable backgrounding renders for occluded windows
+        '--disable-backgrounding-occluded-windows',
+        // Disable renderer process backgrounding
+        '--disable-renderer-backgrounding',
+        // Disable task throttling of timer tasks from background pages
+        '--disable-background-timer-throttling',
         '--disable-dev-shm-usage',
         '--disable-gpu',
         //'--disable-software-rasterizer',
diff --git a/ui/admin/testem.js b/ui/admin/testem.js
index 00bf16832..3ac229155 100644
--- a/ui/admin/testem.js
+++ b/ui/admin/testem.js
@@ -15,6 +15,12 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        // Disable backgrounding renders for occluded windows
+        '--disable-backgrounding-occluded-windows',
+        // Disable renderer process backgrounding
+        '--disable-renderer-backgrounding',
+        // Disable task throttling of timer tasks from background pages
+        '--disable-background-timer-throttling',
         '--disable-dev-shm-usage',
         '--disable-gpu',
         //'--disable-software-rasterizer',
diff --git a/ui/desktop/testem-electron.js b/ui/desktop/testem-electron.js
index baec24997..6738d7f32 100644
--- a/ui/desktop/testem-electron.js
+++ b/ui/desktop/testem-electron.js
@@ -19,6 +19,12 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        // Disable backgrounding renders for occluded windows
+        '--disable-backgrounding-occluded-windows',
+        // Disable renderer process backgrounding
+        '--disable-renderer-backgrounding',
+        // Disable task throttling of timer tasks from background pages
+        '--disable-background-timer-throttling',
         '--disable-dev-shm-usage',
         '--disable-software-rasterizer',
         '--mute-audio',
diff --git a/ui/desktop/testem.js b/ui/desktop/testem.js
index e913f40ce..d25c8bcaa 100644
--- a/ui/desktop/testem.js
+++ b/ui/desktop/testem.js
@@ -17,6 +17,12 @@ module.exports = {
         // --no-sandbox is needed when running Chrome inside a container
         process.env.CI ? '--no-sandbox' : null,
         '--headless',
+        // Disable backgrounding renders for occluded windows
+        '--disable-backgrounding-occluded-windows',
+        // Disable renderer process backgrounding
+        '--disable-renderer-backgrounding',
+        // Disable task throttling of timer tasks from background pages
+        '--disable-background-timer-throttling',
         '--disable-dev-shm-usage',
         '--disable-software-rasterizer',
         '--mute-audio',