I’m thinking it looks like the print gets to a spot where it can get faster, and your hot end can’t keep up with the temperature required by that filament, causing under extrusion. If my guess is correct, it would show on a small test print (same settings) where you get looooong straight lines to allow for speed. And would disappear by slowing down. Since it looks like a relatively expensive filament I suggest you wait for more feedback before trying my test, just in case I got it wrong and my test would waste some filament for nothing.

Go down to “Bugs can optimize for bad behavior”

https://openai.com/index/fine-tuning-gpt-2/

XD

Terrible, just terrible. I’m going to share this with everyone I know.