1. Chrome High Cpu Usage Reddit
2. Chrome High Cpu Usage Windows 7
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I have started using Google Chrome (up to date) on Windows 7 (everything up to date) on a clean install I did a few days ago and compared to Firefox I am seeing huge CPU spikes (up to 100% CPU utilization) when opening empty tabs. I have tried turning off features like network predication and etc. to no effect.

Is there a way to reduce the amount of CPU usage by Chrome?

Here is one strange thing I have noticed that bothers me:when I am playing YouTube video/audio (both the flash version and HTML5 version)when I click on the plus button on the top to open a few new windows it causes the video/audio to lag. I don't experience anything similar when using Firefox. The most strange thing is that it also does not happen when I open the new pages in another Chrome profile or in private browsing. Any idea why this is happening? Aren't these pages supposed to be kept in their separate processes? Why the difference between opening them in another profile and in the same profile?

Thus, causing high CPU usage (sometimes constantly at 100% usage), high disk usage, or both in your system. If you see something like the screenshot shown above in your Windows Task Manager, it is the software reporter tool that are causing all the slow down and lags in your computer.

4 Answers

First, check if it's not extensions or plugins, or some background workers a site uses (to open Chrome Task Manager, press Shift+Esc or Menu → More tools → Task Manager).

If it's not, then my guess is that this is related to hardware acceleration. But note I've not seen this cause in years, definitely not since Windows 8.

First, turn off hardware acceleration at bottom of main settings page (click Show advanced settings... at bottom of chrome://settings, scroll to the end, un-check Use hardware acceleration when available). Recent Chrome versions ask to restart, but from my experience this option is applied immediately, at least partially.

If slowdowns didn't go away even after Chrome restart, open chrome://flags (put this in the Chrome address bar and press Enter) and set up following:

• Disable accelerated 2D canvas – Disable
• GPU rasterization - Disable
• Hardware-accelerated video decode - Disable
• Zero-copy rasterizer - Disable

(that was for Chrome 53.0.2785.89, other options may be available on older systems, where Chrome does not update, for example:

• Disable DirectWrite - Enable
• Enable one-copy rasteriser - Disabled
• Enable zero-copy rasteriser - Disable
• Disable hardware-accelerated video decode – Enable

)

then click Relaunch now at bottom of the window.

If everything will become fine (but a little slower overall maybe), you can switch options back to default one by one until you find one causing the trouble.

(if you won't find an option in flags list, skip it. Maybe also look for other options about GPU and hardware acceleration and make sure HW acceleration and GPU usage are disabled. Chrome gets updates quite often, and flags get added and removed in almost each version).

Answers to the questions:

Is there a way to reduce the amount of CPU usage by Chrome?

if these peaks caused by native chrome engine (JavaScript or HTML parser for example), then no. But more probably this is extensions or buggy videodrivers (their functions are being used for hardware acceleration).

when I click on the plus button on the top to open a few new windows it causes the video/audio to lag. <…> Any idea why this is happening?

only guesses. Either Extension or plugin may cause this, or adding another layer to composited window causes videodriver lag (composited – window with several layers, and some of them rendered by hardware, for example, by hardware video decoding). This is why I suggested to turn off hardware acceleration and check.

Aren't these pages supposed to be kept in their separate processes?

they are kept indeed, but there is one main process (per profile) which outputs information to window. If this process halts for some reason, window updates will stop, and it will look like Chrome isn't responding. I guess, sound output is also done via that main process, this is why sound also lags.

You can check process tree with Process Explorer.

Why the difference between opening them in another profile and in the same profile?

Flags, Extensions and Plugin setting are per-profile, and Extensions off by default in Incognito mode. This is why it may behave differently with different profiles (even with single main chrome process).

Reset Google Chrome:

1. Click the Chrome Menu on the toolbar and then click 'Settings.'

2. Select 'Show Advanced Settings' from the bottom of the page and then click 'Reset Browser Settings.'

3. Click 'Reset' to revert your browser configuration to default.

Chrome High Cpu Usage Reddit

A trick I learned from a few sites:

• Use –-purge-memory-button in Chrome's command line and click Purge memory in Chrome's task manager and it will free up memory (if possible)

Obviously, just disable extensions and that'll save you memory as well.

Also, some sites have mentioned FooTab, an extenstion that pauses all other tabs upon startup until loaded.

Chrome High Cpu Usage Windows 7

Open up chrome://flags and search for delegated renderer and see if you can enable the flag to enable the delegated renderer, aka Übercompositor. You must also be sure you have accelerated renderering enabled since this relies on the GPU. You can check this out on the chrome://gpu url.

What this does is to make the rendering process skip the compositing step and sends high-level drawing commands to the browser process, merging it with it's own compositing pass. This reduces the GPU fill rate, and a great way to help reduce the power used.

protected by bwDracoMay 24 '15 at 18:46

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It's not uncommon for Web browsers to consume a moderate to substantial percentage of your computer's resources, particularly if you're running Flash or Java in one or more tabs. If you notice a CPU spike when you browse certain pages, the pages may contain bugged code, or, in the case of websites like YouTube or Netflix, use extensions that are resource-intensive. If Google Chrome consistently exhibits high CPU usage regardless of your browsing activity, however, and the browser is up-to-date, you may need to disable certain plug-ins or extensions, or reset the application to its default settings.

Disable Add-Ons

Right-click the title bar or press 'Shift-Esc' to open Task Manager in Google Chrome. Click 'CPU' to see which task is consuming the most resources.

Write down the name of the task if it's a plug-in or extension. Select the process and then click 'End Process' to close the task.

Open 'Settings' from the Chrome menu and then click 'Extensions,' or type 'chrome://plugins' (without quotation marks) into the address bar and then press 'Enter,' depending on which type of add-on is exhibiting high CPU usage.

Locate the appropriate extension or plug-in in the list. Uncheck 'Enabled' or click 'Disable' to prevent the add-on from running.

Reset Google Chrome

Click the Chrome Menu on the toolbar and then click 'Settings.'

Select 'Show Advanced Settings' from the bottom of the page and then click 'Reset Browser Settings.'

Click 'Reset' to revert your browser configuration to default.

Warning

• Resetting Google Chrome removes all of your personal settings, with the exception of saved bookmarks and passwords.

About the Author

Ruri Ranbe has been working as a writer since 2008. She received an A.A. in English literature from Valencia College and is completing a B.S. in computer science at the University of Central Florida. Ranbe also has more than six years of professional information-technology experience, specializing in computer architecture, operating systems, networking, server administration, virtualization and Web design.

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