I’ve done this many times and not seen the artifacts you’re seeing.
Full rez and high quality are relative to the size of the source and pixel dimensions of the output but there are limitations to Shatter’s ability to transpose vectors into particles. I’m going to suggest, without seeing your artwork, that you’re scaling it up too far.
bogiesan
This is my standard sigfile so do not take it personally: “For crying out loud, read the freakin’ manual.”