Just out of curiosity, why would you want to have 800 open tabs? What is your workflow? Do you use tabs as bookmarks? How do you find open tabs?
I use the tree-style tabs plug in and scrapbook to keep my sanity.
Once you bookmark a link the history-browsing-trajectory is lost. However once I visit a tab often it becomes a bookmark.
There are extensions to organize and search bookmarks.
I use vivaldi now - and while i have tabs on the left - i do miss tree-style features.