I’m using the basic PLA Bambu filament. I’ve run the calibration on it, and I’m sure the line flow test is good. I ran that one a couple times, and the same line looked good to me both times. I also ran the second calibration test with the smoothness squares.
I tried using the developer feature in Bambu slicer to reduce the seam gap to 5%, but it didn’t seam to improve much if any. I was looking at the scarf joints, but I kept getting an error message when I sliced it that the build plate wasn’t high enough. It gave the model tens of thousands of layers. Maybe it will work better in Orca slicer.