I found this solution to my browser sucking up resources about a year or so ago.
I run/allow it in private browsing mode, never an issue!!!!!

I have never had an issue until today!

Firefox now opens two windows instead of one as of tonight when I get home 3-5-21.
Disabling extension fixes it, enabling reproduces it.

Using Archlinux - EndeavourOS - 86.0 (64-bit)
KDE Plasma Desktop

The new release is incredible. No more load times, always active, and extremely stable.

Hi! First of all, your extension is perfect and really helps me every day! But could you implement a simple night mode ? Actually that's the only thing OneTab is missing :)

OneTab de OneTab Team

Would be awesome if we could convert just one tab with a ctrl+clic for example !

Module très pratique. Mais peut-on créer un groupe d'onglet?

Amazingly useful. It even makes it easier to evaluate and reduce my tabs.