I'm that - the one that opens bunches of new tabs but stays in current tab to finish up before moving to another tab. Firefox has never been able to handle all those open tabs well. This add-on takes care of that problem superbly. 5 stars.

Does exactly what it's supposed to do.

Very nice!
I would like to offer enhancement for the add-on:
After opening many tabs, the firsts two will be active at start. after close the first tab, the second will be ready and the tab after it will begins to load in the background.
So there will be no need to wait for a load after closing the tab

Nice. Have 10 tabs opened in background. CPU is hovering between 2% and 5% with this add-on enabled. Without this add-on Firefox Quantum causes CPU to max out at 100% CPU and screens bog with white windows and no content loaded. Thanks for fixing my frustration!

Great.
Would bu nice to have an icon (favicon) on unloaded tab.

I thought the possibility of having this implemented in webextension was zero. PERFECT.

The biggest advantage of this addon are in tabs with video (youtube for example) , which until now has been buffering in the background and wasting bandwidth + slowing firefox down, not anymore. Thank you, this is extactly what i have been searching for..