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The speed of a large number of animated bitmaps in EaselJS

It seems I am having problems using a large number of animated bitmaps (all based on the same sprite) when using EaselJS. When I launch a couple of them right on my stage, there is no problem, but when I start more of them at the same time (starting from about 30 to 40) while moving them, I start to “flicker” them quite a bit, even with fps around 10.

I do not use any shadows or anything else on these lines. Just use animated bitmaps and move them around.

Does anyone have any good tips to increase this performance?

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600-800 30FPS Chrome 4- iMac ( ).

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