Not crazy
After calibrating the printer to be sure that everything would go well with this filament, I still had problems printing, and I even had a pile of plastic covering the heating block (1st time after +200kg of printing with my v400). I had to replace it with another (fortunately I had a spare).
And another thing. THE SPOOL IS HEAVY !!!!! I've never seen this before. The extruder has to pull hard on the filament, which doesn't help the printer work properly.