Actually I take some of that back! It still seems like it is taking extremely course steps, so much so that the table and build plate are vibrating. If you look close the build plate you can see it. The belts and fasteners are tight yet it is cogging badly at slow speeds. Is there a way to access the stepper drivers directly to tune them? I will try to post a video in a bit.
You can see when it starts to resonate.
Her are a couple videos;
https://youtu.be/pn6OguBRFQQ
https://youtu.be/2D5_UHoHaOE