How to Fix Google Chrome High CPU Usage on Windows

What Causes This?

Google Chrome can use a lot of CPU when one or more tabs are running heavy websites, video calls, video streams, web apps, or scripts in the background. High CPU usage is also commonly caused by misbehaving extensions, too many open tabs, hardware acceleration problems, or Chrome continuing background activity after you close its windows. In some cases, an outdated Chrome build, a buggy graphics driver, or another background app can make the problem worse.

Common Symptoms

• Chrome makes your PC feel slow or laggy
• Laptop fans spin loudly when Chrome is open
• Videos stutter, pages freeze, or scrolling becomes choppy
• Task Manager shows Chrome using a high percentage of CPU
• Battery drains faster than normal while browsing

How to Fix It Manually

1. Check which Chrome process is using the CPU

   • Open Task Manager with Ctrl + Shift + Esc.
   • On the Processes tab, look for Google Chrome.
   • Expand it to view Chrome’s tabs, GPU process, extensions, and background processes.
   • If CPU use drops after closing a specific tab or window, that tab is likely the trigger.

2. Use Chrome Task Manager to find the heavy tab or extension

   • Open Chrome.
   • Press Shift + Esc to open Chrome Task Manager.
   • Click the CPU column to sort by highest usage.
   • Look for tabs, extensions, or subframes using unusually high CPU.
   • Select the item and click End process.
   • If the same site keeps doing this, test it with fewer tabs open or in an Incognito window with extensions disabled.

3. Disable or remove problematic extensions

   • In Chrome, click the three-dot menu.
   • Open Extensions > Manage Extensions.
   • Turn off extensions one at a time, especially ad blockers, coupon tools, VPNs, AI assistants, and tab managers.
   • Use Chrome for a few minutes after each change and watch CPU usage.
   • Remove any extension you do not trust or no longer need.

4. Turn off background apps and test hardware acceleration

   • In Chrome, open Settings > System.
   • Turn off Continue running background apps when Google Chrome is closed.
   • If CPU spikes happen during video playback, scrolling, or page rendering, try turning off Use graphics acceleration when available.
   • Click Relaunch and test again.
   • This setting can help or hurt depending on your GPU driver, so test both states.

5. Update Chrome and Windows

   • In Chrome, open Help > About Google Chrome.
   • Install any available update, then click Relaunch.
   • In Windows, also check Settings > Windows Update and install pending updates, especially display driver or reliability fixes offered there.
   • If you use a vendor GPU app, you can also check for a newer graphics driver there.

6. Reset Chrome if the problem continues

   • Open Settings in Chrome.
   • Go to Reset settings.
   • Click Restore settings to their original defaults.
   • Confirm the reset.
   • This disables extensions and restores default startup, search, and tab settings without deleting bookmarks, history, or saved passwords.

7. Restart Windows and check for software conflicts

   • Save your work and restart your PC.
   • After rebooting, open Chrome before launching other apps and check CPU usage.
   • If the problem starts only after another app opens, that app may be conflicting with Chrome.
   • On macOS, use Activity Monitor to confirm whether Chrome or another process is actually using the CPU. On Ubuntu or Fedora, use System Monitor or top/htop for the same check.

Fix It Automatically with Kudu

Kudu can help you confirm whether Chrome is really the main CPU user or whether another process is driving the slowdown. Its Performance Monitor shows live CPU and memory usage, highlights the busiest processes, and lets you end a process by PID if needed. Kudu can also show startup items linked to busy processes, which helps when background software makes Chrome usage look worse than it is.

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