@estim this is the response I got from Jetpack:
One of our developers had a chance to look at this and it looks like the size and scale of this particular image is a bit of an edge case that results in a blurry final image. The good news is they think they have a patch that should fix it but it’s going to need some testing and review before they push it out to the public at large.
In the meantime, if you’d like a workaround, resizing the image to change the aspect ratio (height x width) a little and re-adding it may work.
