Yes, You Should Still Change Your DNS Settings for Better Internet
The DNS (Domain Name System) server settings on your laptop, phone, or router are your gateway to the web—converting easy-to-remember domain names into actual internet IP addresses, just like your contacts app converts names into actual phone numbers. You can change which DNS server your devices use though, and perhaps get yourself a faster, more secure internet connection along the way.
Chromebooks allow you to set a custom DNS server, but Google doesn’t make the option easy to find. There are many reasons to change your DNS server, after all.