I've heard (and seem) many a horror story about PETG and was ready for hours of troubleshooting. Generic PETG settings in Prusaslicer and honestly this print couldn't be much better! There's a few layer inconsistencies, but those should be pretty trivial to fix after I get a temp tower done.
Printed on an Elegoo Neptune 3 Pro running Klipper using Overture PETG
This was my first PETG print It was on an upgraded Ender 3 Pro with Printed Solid Red PETG I just followed some advice online for the settings I did have have a few issue with PETG on my Sidewinder 2 and almost ruined the glass bed