I just republished a course and found that some, not all, of the pictures were grainy in HTML. I removed all compression and still got the same result. I had to go get the original versions of the pics and resize them to exactly the right size I wanted them to get good results. Lectora X had no problem. So, it looks like if you resize them in Lectora, the resulting pic quality is not as good as X. Anyone else having this problem?
I had the same horrible experience when I would import Snag It pics and resize them. I found, as you did, that you have to re-size the pics to the specifications you want BEFORE you import in 11. Unless you want to sharpen the image in Photoshop, which worked very well, but that’s just way too many steps to have to take in order to get the image in you want.