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Enable ProMotion scrolling and more with these hidden Safari settings

Summary by Macworld
Macworld You’ve got an iPhone with ProMotion, capable of updating the screen at 120 frames per second…so why doesn’t it feel that way when you browse the web? Well, Safari usually limits its rendering updates to 60fps. But you can change that, and other behaviors, using a set of developer options called Feature Flags. Here’s how it works. Feature Flags on macOS Open Safari and then open the Settings (Comand + comma, or in the Safari menu in the…
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Macworld broke the news in on Thursday, January 29, 2026.
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