I made this part as a torture test to test different settings in Cura 4.7. The sharp corners, curves and long distance shows all of the effects of the different Cura/printer settings. The settings I used for this print is the best I have used so far for PETG.

To print the outer walls only, I used 0% infill and 0 top/bottom layers.

Given the amount of time I have spent calibrating my printer, I have attached my Cura settings for PETG as a reference point. Before changing over from single gear direct drive to dual gear direct drive, I used the same settings. I used a 4.5mm retract when I used a single gear bowden with capricon tubing.