I've tried over and over to get 2x smelting to work on my server but cannot get it. This plugin is really confusing and I was wondering if someone could show me how to set it up for that because it seems to cook things way too quickly to be 2x.

Hey!
Why is this confusing? Everything is simple, you have a How-To in documentation.

{
  "Permission": "quicksmelt.use",
  "Use Permission": false,
  "Speed Multipliers": {
    "global": 2.0,
    "furnace.shortname": 1.0
  },
  "Fuel Usage Speed Multipliers": {
    "global": 1.0,
    "furnace.shortname": 1.0
  },
  "Fuel Usage Multipliers": {
    "global": 1,
    "furnace.shortname": 1
  },
  "Output Multipliers": {
    "global": {
      "global": 1.0
    },
    "furnace.shortname": {
      "item.shortname": 1.0
    }
  },
  "Whitelist": {
    "global": [
      "item.shortname"
    ],
    "furnace.shortname": [
      "item.shortname"
    ]
  },
  "Blacklist": {
    "global": [
      "item.shortname"
    ],
    "furnace.shortname": [
      "item.shortname"
    ]
  },
  "Smelting Frequencies (Smelt items every N smelting ticks)": {
    "global": 1,
    "furnace.shortname": 1
  },
  "Debug": false
}​

Merged post

I just changed 2 lines, it could be 1 line. lol. Speed Multipliers in global -> 2 and Use Permission -> false.

Yes, of course that seems simple, however, that is exactly what I put yet the smelting speed was way faster than 2x. I even used a stop watch just to check it because it seemed so off, and it wasn't even close to being 2x smelting. It was more like 4x or 5x smelting and when I changed it to 0.2 for global speed multiplier, it didn't seem to make much of a difference from 2.0.

Because we overwrite the real furnace system (make our own). So cant really make it 100% like in the game. Also it should really differ (i mean 0.2 and 2.0), that's strange. Maybe you didnt give yourself a perm or didnt disable it