image disappears for split second then reappears at start of slide

This is in Captivate 9.

I have several slides that start with the same image from the previous slide. For clarity, lets call them slides S1 and S2. The image on  S2 has an effect such as "ease out to right". The problem is that when the button is clicked to move from S1 to S2 the image on S2 disappears for a split second, then reappears, then the "ease out" or "fly out" effect takes place. This creates a flicker in the continuity of the image. On the slides that have this problem there is usually more than one image with an effect on it but the flicker only happens to one or two of the images with effects - not all of them.

• I've checked and double checked to make sure the images are covering the entire timeline, so that doesn't seem to be the problem.
• The images are .pngs with transparent backgrounds.
• The software is up to date.
• This does not take place in the "Project" preview, but in the 'In Browser' and 'HTML5 In Browser' and 'In Adobe Edge Inspect' previews it does. I've also published it and played it in Edge, Chrome and Explorer and the glitch happens here too.

I've not found anyone with this same problem yet. Thanks for any insight you can give.