On my work monitor it's a barely noticeable blur. I will try on my fancy gaming monitor at home tonight & let you know.
I haven't used a separate player object in any of my games.. just check your bounding boxes are correct (on each animation frame they must be the same too).
e.g. I can see on the "stand" animation the bounding box isn't on the bottom of the frame, where his feet are. So this causes the wobbling.
Using a separate player object to peg to was hiding the real problem.
I've saved over the file so you can check the link again to see what I mean. He is now smooth. :)