alt Hacker NewsClosing Tabs in Safari till takes more than a second though. And if you hold Cmd-W to close all of them it just completely locks up and crashes. Still not fixed since the release of Safari 26.
Literally unusable
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Works fine for me. I wonder if you have some extension or script on one of the sites you use slowing down the tab closure.
This sounds like swap needing to be swapped in and then released. Check your memory usage.
I’ve been running the macOS 26.4 beta and have none of these issues.
I'm on an M4 Pro MacBook-- basically the fastest computer you could buy from Apple before today-- and opening/closing the tab sidebar in Safari on Tahoe takes multiple seconds, even if I have only 4-6 tabs open, and seems to drop to 5 FPS. It's comically bad.
It's so bad I switched back to Chrome. I had thought Chrome had a major battery life penalty compared to Safari on Macs, but I checked more up-to-date info and apparently that's outdated.
Never had this problem, been on Tahoe since it released. My safari tabs are buttery, silken smooth.