Why is crafting so slow?

I am permanently on 91% slow despite using a crafting bench and high morale and focus. Why? Is this another “fun feature”?

In which version? With what mods? Etc…

Just some things that come into my mind (and I could guess all day):

  • Light level
  • Tiredness/Fatigue
  • Weariness
  • Missing proficiencies
  • Missing skill level
  • Temperature
  • Sickness
  • Thirst
  • Hunger

You lack one or more proficiencies of the given recipe. Or maybe you maxed everything out and that is the max achievable speed.