After several trials, I am having issues with printing (Zortrax M200 with Z-Ultrat, 0.09mm, normal speed, fan auto) : one side of the object is badly printed (see pictures).

I checked the 3D file, that seems to be clean. The machine is clean and extruder has been changed one month ago.

I am thinking about a "seam" problem because when I tried to print with the random seam option, the printed issues moved from one side to every sides of the object.
The object is a tube with a pattern (140mm high, 1.5mm thick).


I dont think the slicing look unusual. I would try printing with a med or low infill as max probably isn't necessary in a model like this. Also try ABS, Ultrat is just straight up weird sometimes.