I like to read dozens of comic strips every day. I bookmarked all my favorites and put them in a “Comics” folder mounted on the Chrome toolbar where I could command-click to open them all at once, and then hit command-W after reading each one.
A few years ago Chrome started to slow down so I switched to Safari. When that began to refuse to mount them all without rebooting the iMac, I switched to Firefox for this one job. Works like a charm.
So if you have a bunch of tabs you want to open at once, give Firefox a try,
I’ve been doing this with Firefox for a very long time.
I use Google Bookmarks to organize all my bookmarks. I have a “Comics” label for all of the comic strips I read.
I use the hccbe Google Bookmarks Extension to create a bookmarks folder tree from my Google Bookmarks (organized as a folder for each label).
When I go read comics in the morning, I middle-click on the “Comics” folder created by the extension, causing it to open each bookmark in a separate tab.
I have 56 tabs open. At that level Safari chokes, freezes, spins the wheel, doesn’t open to the correct page or doesn’t open one at all. For me Firefox wins hands down.
I’m running Big Sur 1.11 on an iMac (Retina 5K, 27-inch, 2017) with 8 GB of RAM.
I think different browsers handle open tabs in memory in different ways.