Sometimes - prints come out looking like the the model was deflated around a skeleton of the model. corners stick out, and the walls connected them are sucked in, and there is banding. really bad banding.
Seems to happen consistently with a given model - Haven’t done a lot of experimentation (don’t wanna spend the filament) but if i recall correctly, this happened with a model, I stopped it, and when i reprinted, the same thing happened. The prints before and after that model were fine.
Its not an issue with the filament. The two prints in the photo were printed with the same filament (PETG HF) with the same print settings.