I am currently struggling to find the right settings to print PETG. I was printing a lot the Basic Retraction test by Stefan_Alberts_ and I noticed that printing the platform where the two cylinders stand up takes quite a long time, so I just used Meshmixer to take away part of it... and here is the result. Maybe not as stable and beautiful, but prints faster.

Hope it helps!

ORIGINAL: https://www.thingiverse.com/thing:2563909