macOS 15.5 destroys SwiftUI Table Performance

Question

bdkjones OP

Created May ’25

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Has anyone else noticed that macOS Sequoia 15.5 has a regression in SwiftUI Table scrolling performance?

I have complex Tables in a SwiftUI app and they scroll adequately on macOS 15.4.1 but hang, beachball, and stutter while scrolling on macOS 15.5. The exact same build is running in both cases.

(I've even reduced the table to three simple columns of text and STILL fail to get entirely smooth scrolling on macOS 15.5.) It's like someone just fundamentally broke Table on macOS.

Has anyone else encountered this?

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Answer 1

lehrtim OP

3w

That's interesting. We're seeing a similar regressions in our macOS app with the Picker. The same build that ran well on 15.4 or below, now has hangs in the range of multiple seconds. Instruments shows visible hangs at 100% on one core with SwiftUI blocking the main thread. Did you manage to mitigate your issue?

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