How to rid animation stutter on images?

I'm having unacceptable stuttering problems with animated images.

300x600a – Bad stuttering:

Watch and see the stuttering.  It's especially bad as the 3rd image comes to a rest.

300x600b – Fixed-ish, but via a poor technique:

Watch and see that the stuttering is mostly gone.   I did this by changing the scale of the photos from 100% to 100.1%.   While this trick fixes the stuttering, we're left with a slightly fuzzy photo and displeased clients.

Download files here.

Before suggestions are made that I need to replace the createjs.Ticker code with the RAF_SYNCHED code.   I've already done that.  (See the find/replace below if you're unfamiliar with this as it will improve your animations.)

If a contest was held titled "Who Creates the Smoothest Animation", Animate's canvas animations will lose to animations made by hand-coded, GSAP or GoogleWebDesigner.  My guess is because those don't use createjs or canvas?

Stuttering has long been an issue in Animate and I think it should be addressed.

Thanks to anyone who can help!

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FIND

stage.addChild(exportRoot);

  createjs.Ticker.setFPS(lib.properties.fps);

REPLACE

stage.addChild(exportRoot);

  createjs.Ticker.timingMode = createjs.Ticker.RAF_SYNCHED;

  createjs.Ticker.setFPS(lib.properties.fps);