It’s even more incredible if you consider what they came from, Joe Danger, to a large game. Being a fan of Joe Danger I didn’t fall for the hype, as it seemed way too ambitious of a game. And then? It’s 8 years of free updates adding content even beyond what was initially promised.
Aside from the over promising at the beginning, or rushing the game launch depending on how you want to see it, it’s really great stuff. I cannot think of any other game starting as overwhelming negative, forcing Sony to work proper refund systems, to absolutely beloved by everyone.
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.