Basic grind craft is too slow, some of those you're going to just press standard through the whole craft since rapid may be too much durability loss if it fails. Hasty Hand isn't really worth leveling so you use it on low level synths, which helps a lot, I'd probably kill myself if i had to do the crafting mini game for a rank 20 or below craft on something like "cotton yarn". I don't know if its too slow for guild leves and such it always depends on the craft, in general though crafting is one of the only things they did right, and its a serious gill sink for me.