5k tabs SPd1wPOCpxgWVCF
At 1k tabs firefox was snappy and responsive, but at 5k tabs it was bad, very unstable, buggy and sluggish.
Firefox would crash often even doing simple tasks, some times it took 2 or 3 tries to open firefox. scrolling through all the tabs a couple of minutes.
But all good things must come to an end. Now I close any extra tabs, have 5 - 30 tabs open.