Mp4 export settings stuck at low quality

I have a file with 5 slides - no interactivity - export to html5 is fine, but I need mp4. The file is mostly text with simple images and animations. 5 min.

On export to mp4, regardless of what settings I choose in Publish, the file comes out at a very low quality- blurry images. I've tried all mp4 settings including Youtube HD, IPad, custom, etc. No matter what settings I choose the mp4 is always the same size (6.7MB) and very low quality.

Regardless of what setting I use the publish settings revert to VBR with a target bitrate of 4 and a max bitrate of 1 ???

Even if I choose bit rates of 10 and 10 (10 being the max), the file is the same size and poor quality.

This is a file created in Captivate 6 and updated and re-saved in 9 (the publish settings in 9 seem a huge step backwards from 6).