it's odd because on some specific website it will pop a tip which writes "darkreader is slowing your website", and then the firefox stuck for a while.
Besids that issue, it's pretty good add-on.

Parfois, il peut être utile de désactiver temporairement le mode sombre pour pouvoir lire correctement un texte à l'écran, ou scanner un code QR par exemple. Dans ces cas, j'ai souvent constaté que quand je clique sur le bouton de l'extension pour ouvrir le menu, cette dernière plante / met beaucoup trop de temps à charger. Il est ainsi très pénible voire impossible de changer rapidement du thème sombre au thème normal.

Probably one of the most important if not greatest Add-ons Ever! My eyes no longer hurt at night. I totally recommend this to anyone who loves to view websites without the eye straining bright colors! This add-on truly made my browsing experience much more comfortable.

100%

Nicht so gut - schwarz bleibt schwarz, man kann teilweise nicht alles (Bilder, Texte,...) erkennen

Finally a good theme that delivers! first ever DARK theme that actually is dark xD Thank you very much, and here, have a 5/5 rating! :)

I really like this addon except it was really slowing down my browser so I had to disable it. I hope that future updates will improve performance. If it didn't slow down performance, it would be 5 stars. I'll stick to Stylish for now for dark mode.

Sangat bagus

Finally on FF, Thank you for this extension!

I use Chrome, Opera and Firefox on a regular basis. Trust me, this is the best dark mode plugin you'll find across ANY OTHER BROWSER. I created a ff account just to upvote this

Excellent! It's so easy on the eyes.

I must say this is by far the best looking extension I have ever used; but the performance is horrific, when loading specific websites it grinds your PC to a halt, and my computer is not a low spec machine.

This is a MUST add on, it is so comfortable for my eyes, I can't believe why I did not know it. 5 star. There is only one problem, that it changes my black theme of firefox (on restart of firefox) to white. Again I have to make it black, otherwise it is the best add on.