Issue description: Performance problem with CraftingManager

What happens: Eats up CPU.

What you expected to happen: Should have used AE2

Steps to reproduce: No idea.

...

Version (make sure you are on the latest version before reporting):

• Minecraft: 1.12.2
• Forge: 2705
• Refined Storage: 1.5.32

Does this issue occur on a server? [yes/no] Yes

If a (crash)log is relevant for this issue, link it here:

[pastebin/gist/etc link here]
http://prntscr.com/jwgqtp

If you need any more information such as profiles I can try to provide it.

Okay, I'll just remove your mod. Lol

There will be new crafting system in 1.6 + you didn't filled the issue. Describe your issue better next time and maybe you get better answers.