My new U1 has been printing so great. I just printed a plate full of bag tags. One came off the plate during the last layer, the rest look like this on the back. I can’t ship them. I used generic PLA and didn’t change any filament settings. The rippling was so severe that they were barely stuck to the plate. I understand this to be overextrusion.
I personally like to run adaptive mesh, this way it only probes the area where you print on. This saves time and usually gives a great resolution mesh, in my experience better than doing a full bed mesh.