In the Task Manager window, you could see which apps are consuming the most CPU ormemoryon your Chromebook.
it’s possible for you to rule this out by running quick connection speed tests.
Run these tests to confirm your internet speed is what you expect.

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The best of these services includeSpeedtest.Net,TestMy.net, orSpeedof.me.
These apps let you check your internet speed from inside the online window.
The best apps include SpeedTest andOpenSpeedTest.

If you discover your web connection is the issue,check your routeror contact yourISPtotroubleshoot your internet connection.
This can lead to errors whenever you make a run at download or create new files.
Most Chromebooks come with 16 GB to 32 GB of local storage.

There are a few ways you’re free to resolve this.
Enable Page Prefetching
Google implemented a creative technology to make web pages load faster.
This is calledpage prefetch.

But even Chrome apps are technically Chrome extensions that run in their own window.
At the top of the window, select thegearicon >My Extensions & Apps.
This page will show all extensions and apps that you have installed.

If you see any apps or extensions that you don’t use anymore, select Remove from Chrome.
So, only use it as a last resort.
The option to clear browsing history is automatically checked when you clear browsing data.

ensure to deselect this if you don’t want to lose your browsing history.
Block Javascript and Ads
Most websites these days utilize Javascript for both website functionality and ads.
Unfortunately, not all websites use this scripting efficiently, and still more websites use malicious scripts.

you’ve got the option to take this a step further by disabling Javascript as well.
Keep in mind that disabling Javascript will remove a lot of normal functionality from many websites.
Enable Hyper-Threading
Hyper-threading is when multiple threads (processes) can run on a CPU.

To Enable hyper-threading, open Chrome and typechrome://flags#scheduler-configurationinto the location field.
In the dropdown to the right, changeDefaulttoEnables Hyper-Threading on relevant CPUs.
Note that this feature will only work on Chromebooks with CPUs that are capable of hyper-threading.

You’ll also need to balance the pros and cons of performance versus security risk when enabling this.
Enable GPU Rasterization
Google has a list of experimental Chrome flags that can help boost performance.
One of those is GPU rasterization.

This simply offloads web content processing from your CPU to your GPU.
To enable this experimental feature, open Chrome and typechrome://flags#GPU rasterizationinto the location field.
To enable this feature, change the dropdown to the right fromDefaulttoEnabled.

A Powerwash will remove all apps and extensions, and set all Chromebook controls back to factory default.
You will also lose anything stored in local storage.