BTW answering the first post: Directly from Overture web:
Is PETG moisture sensitive? What are the drying recommendations?
Yes, PETG is sensitive to moisture, so we recommend drying under 65°C (149°F) for 7 hours. Avoid extended drying times, as this can lead to the filament becoming brittle and unsuitable for printing. For storage, keep it in a sealed container with desiccants to maintain low humidity levels.