Then maybe it's something other than memory. Despite having a bunch of extensions running, the only problem I have ever had with 3-400 open tabs is the mental effort of managing them.
I'm honestly perplexed I don't have more problems as the machine I do most of my reading/browsing on is more than a decade old and doesn't even have a GPU. Plus I nearly always have 2 messaging apps, a pdf viewer, and 1-3 other browsers running simultaneously, maybe a logging app too. All running on Windows 10, it's not some turbocharged Gentoo installation or anything.
I'm honestly perplexed I don't have more problems as the machine I do most of my reading/browsing on is more than a decade old and doesn't even have a GPU. Plus I nearly always have 2 messaging apps, a pdf viewer, and 1-3 other browsers running simultaneously, maybe a logging app too. All running on Windows 10, it's not some turbocharged Gentoo installation or anything.