It does its job, which is to turn dark mode on for all websites. But it really slows down the browser too much.

As another user suggested, I'm using Midnight Lizard now which is more highly customizable and it doesn't slow the browser down as much as Dark Reader.

Great add-on all around. Helps my eyes, and it looks natural.

Works great!

Improvement Idea:
It would be nice to have a "Quick Switch" option to directly toggle dark mode on/off when left clicking the addon's tooltbar icon. Could then add Quick Switch on/off to the toolbar icon's right click context menu to get back to the normal settings.