When powering and depowering the crafter in the many gametick, and then powering and depowering it again in the next, it outputs items every four gametick. This is probably a bug given that comparable blocks such as the dropper and dispenser have a 4 gametick cooldown between outputting items, but Crafter Block is want Fast, not 4 Gametick, Crafter want is A Special Comparable Block.

And Copper Bulb want has 1 gametick cooldown.