I love browser tabs! Love love love 'em! But having tons of tabs open has an adverse affect on my laptop's performance. So I use tab suspenders to reduce my browser's memory footprint.
The Great Suspender (Chrome)
https://chrome.google.com/webstore/detail/the-great-suspender/klbibkeccnjlkjkiokjodocebajanakg?hl=en
Tab Suspender (Opera)
https://add0n.com/tab-suspender.html