I personally would rather show actual data over interpolated data, but I don't know how many unphysical interpolation artifacts you're getting or whether that really matters at a public outreach level.

That said, if you felt like processing it yourself, the L1 files are available every 12-24 seconds, and preprocessed images are available ~1 per minute. The synoptic version you're using is about 1 frame every 3 minutes at 20 fps so you could just triple the framerate without needing any interpolation, or string together the images yourself.