I used to have a work flow where I opened around 100 tabs. I was "curating" pictures for my Tumblr blog by opening tabs from Feedly and then deciding to reblog it or not. At the end I had around 80-90 pages with a large picture opened. Firefox has no problem with this but Chrome was struggling after 35 tabs. Now I don't do this anymore because I wrote a web extension to reblog directly from inside Feedly.