I tuned my Simplify 3D profile for PETG, on the Creality CR-10S PRO. The results can be seen below.

Settings:
Layer Height – 0.15 mm
Temp: 220C
Speed: 60mm/s
Retraction: 3mm at 50mm/s
Coasting: 1mm

CR-10S PRO Simplify 3D Profile for PETG

You can download the profile by following this link. It is really important to properly tune retraction settings and coasting, in order to reach the same quality

Happy Printing.