FYI: This isn't a browser-only thing. All platforms (Windows, Mac, ios, android) typically have a single-threaded UI.
For responsiveness that’s what you want, context switches add quite a lot of jitter and perceived slowness’s, making your app feel slow despite running at 120 fps.
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For responsiveness that’s what you want, context switches add quite a lot of jitter and perceived slowness’s, making your app feel slow despite running at 120 fps.