MCMXCI

I’ve been dealing with the same for a while with rapid petg. For me it came down to tuning retraction/untretraction distance/speed. PETG is more generally more viscous than something like PLA and retracting too far can cause large gaps like this.

This can also be caused by oozing from the nozzle. The filament that is meant to go down next drips/strings out of the nozzle so the hotend under extrudes until the pressure is back

I don’t see mention of your print speed but if it’s fast-ish (above 100mm/s) the pressure balance in the hotend becomes a significant factor

Nwg-look can change all the theme settings at once. Check it out

The instructions change if you’re using flatpak. I was only able to get it to work with a manual import

600 symmetric, $60/mo