Chrome Suddenly Eating 100% CPU After The Latest Update? The Quiet ‘On‑Device AI’ Switch That Fixes It

If Chrome suddenly started acting like a space heater after the latest update, you are not imagining it. One day it is fine. The next, your fan is screaming, battery life falls off a cliff, and opening a few normal tabs feels like asking your PC to render a movie. That is especially maddening when you have already done the usual cleanup. You turned off extensions, cleared cache, maybe even ran a malware scan, and Chrome still hogs CPU and memory. One overlooked reason is that newer Chrome builds have quietly pushed more on-device AI features and background processing onto your computer. For some systems, especially older laptops or mid-range desktops, that extra work can tip Chrome from “fast enough” into “why is everything freezing?” The good news is you usually do not need to reinstall Chrome or switch browsers. There is a simple setting worth changing first, and it takes about two minutes.

What changed, and why Chrome suddenly feels so heavy

Chrome has been adding more AI features that run on your device instead of only in the cloud. On paper, that sounds useful. In real life, it can mean more CPU usage, more RAM use, and more heat, especially right after an update when Chrome is indexing, preparing models, or enabling features in the background.

That is why the usual advice does not always help. If the real problem is baked into the browser itself, clearing cookies will not fix it. Neither will blaming every extension by default.

If you searched for chrome high cpu after latest update on device ai, you are looking in the right place.

The 2-minute fix to try first

Start here. The names can shift slightly depending on your Chrome version, but the path is usually close.

Step 1: Open Chrome Settings

Click the three-dot menu in the top-right corner of Chrome, then choose Settings.

Step 2: Check the AI section

In newer versions of Chrome, look for sections such as AI Innovations, Experimental AI, or similar wording. Google moves labels around, so do not panic if yours is not an exact match.

Step 3: Turn off AI features you do not use

Disable features such as:

• Help me write
• Tab organizer, if you do not want AI sorting tabs
• Page summarization or reading assistance tools
• Any setting marked AI, experimental, or on-device that you did not intentionally turn on

Step 4: Restart Chrome

Close Chrome fully and open it again. Then use it normally for a few minutes and check whether CPU use settles down.

If you do not see an AI section

Google rolls out features in waves, and Chrome versions are not always identical. If you do not see an obvious AI menu, try this:

• Type chrome://settings/performance into the address bar and check for new performance or background processing options.
• Type chrome://flags and search for terms like AI, optimization guide, compose, or on-device.

Important note. Chrome flags are more advanced. If you change them, only switch off items that clearly mention AI features you do not want. If you are not sure, leave the flag alone.

One more setting that often helps

Turn off background apps

Go to Settings > System and turn off Continue running background apps when Google Chrome is closed.

This does not target AI directly, but it stops Chrome from quietly chewing through resources after you think you have shut it down. On laptops, this can help battery life right away.

How to confirm Chrome is the culprit

If you want proof before changing anything else, Chrome has its own task manager.

Press Shift + Esc while Chrome is open. You will see which tabs, extensions, or browser processes are eating CPU and memory. If the browser process itself is spiking, or if you notice odd internal processes rather than a single bad tab, that points more strongly to a Chrome-level issue instead of one rogue website.

Why this is happening to normal users

This part matters. Many people never asked for local AI features in their browser. They just wanted Chrome to open websites quickly. But browser makers are in a race to add AI tools, and sometimes those features arrive quietly, with more device-side processing than people expect.

On a powerful new desktop, you may barely notice. On a two- or three-year-old laptop, the difference can be obvious. More fan noise. More lag. Worse battery life. Higher temperatures. It feels like your computer aged overnight.

What not to do yet

Before you wipe your browser profile or reinstall Windows, do not go nuclear. Try these first:

• Disable AI and experimental browser features
• Turn off background apps
• Restart Chrome
• Restart the PC once, after making the changes
• Check Chrome Task Manager for any process that keeps spiking

Reinstalling Chrome is a lot of hassle and often does not help if the issue is tied to a current feature rollout.

If CPU is still pinned after that

Try these next steps

• Update Chrome again. Sometimes Google pushes a quick fix after a rough release.
• Update your graphics driver, especially on Intel and AMD laptops.
• Create a fresh Chrome profile to rule out profile corruption.
• Temporarily disable hardware acceleration under Settings > System, then test.

Hardware acceleration is a bit of a coin toss. For some people it reduces CPU load. For others it causes glitches. Test it, do not assume.

At a Glance: Comparison

Feature/Aspect	Details	Verdict
On-device AI features	Can increase local CPU and RAM use after updates, especially on average laptops and older PCs.	Best first thing to switch off if Chrome suddenly became slow.
Background apps	Lets Chrome keep running tasks even after the browser window is closed.	Worth disabling for better battery life and less mystery CPU use.
Reinstalling Chrome	Time-consuming and often useless if the problem came from a current browser feature rollout.	Try only after settings changes and basic troubleshooting fail.

Conclusion

If Chrome started maxing out your CPU right after an update, there is a good chance you are dealing with more than a bad tab or a bloated extension. Newer Chrome builds have quietly added heavier on-device AI features, and most quick-fix guides still are not pointing people there first. That is why this setting change matters right now. It is fast, safe, and for many people, it is enough to make Chrome feel normal again. Best of all, you do not need to switch browsers, reset your whole setup, or spend an hour reinstalling things. Just turn off the extra AI features you do not want, stop Chrome from running in the background, and give your PC a little breathing room.