My mobile device is a Moto G Play 2016. In general, it's still snappy handling apps. But it tends to grind to a halt when loading websites in my firefox android browser. And loading a Medium.com article was particularly bad. So I finally got around and built a browser plugin that makes that situation better.
https://addons.mozilla.org/en-US/firefox/addon/medium-unplugged/
This plugin supports syntax highlighting and bypass the Medium paywall. Gists, embeds, images still works.
It saves my hardware's resources, better reading experience, and probably even saves battery life.
Now I no longer dread clicking on a medium link in search results =D