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My skills are a little rough and this is probably more than a company can devote to a browser war study but it would be interesting to see this benchmark run multiple times or as a Monte Carlo simulation.

Also - does anyone know what core runs at 50% in IE even when the user is idle? Not surprised to hear it but curious if anyone knows what it is.

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While idle, the profiler tells me that the function with highest time is yp at line 5198 in chart.js. But no idea whether that's really the culprit.

Hi, Lucid CTO here. We've spent a lot of time in the IE profiler, and it never appears that any of our Javascript is consuming much CPU at all. There are a handful of functions, like the one you quoted, that poll frequently on a setInterval. But none of them are doing much more than checking a variable and returning almost every time. It's really bizarre.

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