it feels as its using alot of fuel.. is my config right?

{
  "Use Permission": true,
  "Speed Multipliers": {
    "global": 3.0,
    "furnace.furnace": 1.0
  },
  "Fuel Usage Speed Multipliers": {
    "global": 1.0,
    "furnace.furnace": 1.0
  },
  "Fuel Usage Multipliers": {
    "global": 1,
    "furnace.furnace": 1
  },
  "Output Multipliers": {
    "global": {
      "global": 1.0
    },
    "furnace.furnace": {
      "item.metal.fragments": 1.0,
      "item.sulfur": 1.0
    }
  },
  "Whitelist": {
    "global": ["item.shortname"],
    "furnace.furnace": ["item.shortname"]
  },
  "Blacklist": {
    "global": ["item.shortname"],
    "furnace.furnace": ["item.shortname"]
  },
  "Smelting Frequencies (Smelt items every N smelting ticks)": {
    "global": 1,
    "furnace.furnace": 1
  },
  "Debug": false
}​

It uses 3x more items including fuel and ores because it is 3x faster I suppose.

thats what i thought. how do i just make it cook faster instead of using more fuel? i tried other options but it didint seem to work

It is not actually using that more fuel, it just looks like it because it is faster. That's what I've meant.