Quantum has been really good performance wise on most sites. It's most flagrant on the Stripe API docs, which are sluggish as hell on Chrome Linux and butter-smooth on Firefox: https://stripe.com/docs/api
However, I have two major tab-management issues with Firefox which make it near-unusable for me:
1. No support for "scroll wheel to switch tabs" (scroll on tabs to switch between them). This is a feature common to nearly all Linux software and Firefox removed it a few versions ago. Quantum killed "Tab Wheel Scroll" which reimplemented it.
2. No support for multi-select tab management, which Chrome is amazing with. If you didn't know, in Chrome, you can ctrl+click and shift+click tabs to select multiple at once and close, move or snap all of them at once like in a file manager. Super useful.
However, I have two major tab-management issues with Firefox which make it near-unusable for me:
1. No support for "scroll wheel to switch tabs" (scroll on tabs to switch between them). This is a feature common to nearly all Linux software and Firefox removed it a few versions ago. Quantum killed "Tab Wheel Scroll" which reimplemented it.
2. No support for multi-select tab management, which Chrome is amazing with. If you didn't know, in Chrome, you can ctrl+click and shift+click tabs to select multiple at once and close, move or snap all of them at once like in a file manager. Super useful.