https://youtu.be/x38OLicVF38

Any idea what might be causing the rough edges Illustrated in the video above? I tested my X & Y, by having it cut some circles and straight lines of different lengths and diagonal lines, and all of that came out perfect, so I'm going to test my Z today, I don't think I'm missing steps because the heighth is correct on the parts it's not like one part is a little shorter than the other or part way through it's cutting at a different height than before, it's just those scalloped edges.
Thanks!