Gradient color render quality

I need some advice on this. I make graphics in harmony where I use gradient colors and export them as png with transparent background but the result is awful. The gradient color gets exported as if in gif file it gets striped of its quality and doesn’t has its smooth transition trough the colors as its supposed to. How do I fix that?

IF you are exporting to bitmap format, select one of the “Double Precision” formats such as PSDDP3 or PSDDP4 (double-precision Photoshop format with RGB or RGBA).

For movie formats make sure that your movie is not using compression. The H.264 codec usually produces good results.