We are currently testing our PET-G settings and noticed that slow printing gives a better result for PET-G. Slower printing gives a better extrude: Turn down your printspeed to 50% during the first layers and you wil be fine. Later you can go up to 75% or leave it at 50%. We are also working on new nozzles that fit PET-G better. Check for the latest experimental values our printsettings page, the latest changes are in RED color.