Got it, thank you for clarifying that Rick
The non-drizzled image is a stack of original subs without upscaling, at about 1.6"pp. My system is a bit under-sampling when I use a reducer, thus there are blocky stars in the non-drizzled image. I rarely upscale final images as I am confident that drizzle will yield a superior result to upscaling a final image, but perhaps one day I could actually try to measure if there are any differences.
Suavi