5 hidden Chrome settings that are quietly eating your PC's RAM

Chrome is the preferred browser for most people, but it can sometimes become a performance nightmare. Talking of performance, the problem might extend far beyond just having too many tabs open. Even on my ASUS TUF Gaming laptop, which has 16GB of RAM, I noticed Chrome's baseline RAM usage was high when I checked it in Windows Task Manager.

I found that Chrome was eating gigabytes of memory for features I barely use. By default, Google enables several aggressive performance, AI, and syncing tools like on-device AI, background app persistence, page preloading, memory saver, and background sync. While these are intended to make the browser feel instantaneous and useful, they come at the cost of your PC's RAM. If your PC fans are spinning all the time or your system feels sluggish, your open Chrome tabs aren't the only culprits. Change these five hidden settings to stop the browser from eating your memory.

Disable background app persistence

Stop Chrome from running when it's supposed to be closed

Clicking the red "X" in the top right corner of your browser alone doesn't close it completely. By default, Chrome keeps a background process alive to keep web apps and extensions running in your system memory 24/7.

I caught this behavior using Windows Task Manager (Ctrl + Shift + Esc), where multiple Chrome background processes were actively eating up megabytes of RAM while Chrome was shut. Fortunately, Chrome offers an option to disable these background processes.

To do so, open Chrome, click the three-dot menu in the top right corner, and select Settings. Navigate to System on the left sidebar. Toggle off the switch next to Continue running background apps when Google Chrome is closed.

Disable all page preloading

Trade a microsecond of speed for gigabytes of saved memory

Google Chrome feels incredibly fast because it constantly guesses what you're going to do next. When you hover over a link or type a familiar URL, Chrome's preloading feature will try to download and render the target page in the background before you even click it. While this makes navigation feel fast, it adds weight to your PC's RAM by loading data beforehand.

To stop Chrome from aggressively pre-rendering web pages, open your Settings menu and click on Performance. Scroll down to the Speed section. You will see a primary option labeled Preload pages. By default, it is set to Standard preloading mode, which still actively loads background pages. If you've set it to Extended preloading, the memory drain is even worse.

I recommend clicking the main toggle next to Preload pages to disable this feature completely and reduce your browser's memory footprint.

Audit your Memory Saver setting

Maximize the Memory Saver option

Google introduced the Memory Saver feature to automatically free up RAM from inactive tabs. It is a great tool for making the most of your browser while using fewer memory resources. This setting can be found under the Performance section of Chrome settings. Make sure the Memory Saver toggle is turned on and set to the Maximum setting to force your inactive tabs to deactivate after a much shorter period of time.

If you want a few important sites to always be in memory, irrespective of your Memory Saver setting, you can add them to an exception list. Look up at the General heading at the top of the Performance page and check the Always keep these sites active section. Click the Add button to add URLs of sites that need an exception from Memory Saver.

Restrict unnecessary background syncing

How idle site permissions silently drain your system resources

Many modern web apps ask for permission to sync data in the background so they can update feeds, pull in new messages, and trigger push notifications even when the tab is not active. While this is useful for chat apps like Slack or WhatsApp, it can drain significant system memory in the background.

To tweak this setting, go to Settings, then Privacy and Security, and click Site settings. Scroll down, click to expand Additional Permissions, and select Background Sync. Under the Default behavior heading, select the option for Don't allow closed sites to finish sending or receiving data.

For a more targeted approach, you can leave the default setting — Recently closed sites can finish sending and receiving data—active but scroll down to the Customized behaviors section. Click the Add button next to Not Allowed to finish sending or receiving data to manually block specific memory-hogging sites from running background syncs.

Disable on-device AI processing

Stop Chrome from downloading a 20GB AI engine in the background

Google recently introduced local generative AI tools into Chrome to help summarize web content, organize tabs, and detect scams. To enable this process quickly, Chrome uses your native hardware rather than sending the information to a cloud server.

To enable this feature, Chrome can silently download roughly 20GB of AI model data in the background if your PC meets the hardware requirements. While running AI locally is great for privacy, it is a massive, unnecessary burden on your RAM and storage if you do not actively use the above-listed features.

To disable on-device AI, open your Chrome Settings menu and navigate to AI in Chrome on the left sidebar. Look for the On-device AI option and toggle it off.

Reclaim your system memory

Is this microsecond of convenience provided by background apps, local AI processing, and preloaded pages really worth sacrificing gigabytes of your system memory? For most users, the answer is no. By tweaking these overlooked Google Chrome settings, I reclaimed a significant amount of RAM on my TUF Gaming laptop and worked seamlessly.