[Webkit-unassigned] [Bug 261031] Visible jank in 60fps animation containing 2 alternating frames, no matter of approach taken

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=261031

--- Comment #3 from Simon Fraser (smfr) <simon.fraser at apple.com> ---
You have to be really careful here; adding log elements is going to block the main thread, and the longer the log list gets, the longer that will take. Also, the different subtests may interfere with each other, so I'd suggest moving each into its own document.

That are many things going on in the browser that may cause dropped frames here (e.g. JS garbage collection); browsers really aren't designed as realtime OSes, so getting to zero frame drops would be really hard.

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