Issue description:

Long Craftingqueues for processing patterns cause significant performance issues.

Steps to reproduce:

1.Setup Autocrafting with Mek elite factories
2. request a few thousand items
3.
...

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

• Minecraft:1.12.2
• Forge:2825
• Refined Storage:1.6.14

I tried to replicate @theyoungsters issue and this is the result:
https://sparkprofiler.github.io/#GWZTTP4QkF

This is just 3 Machines.
Gonna look into it tomorrow.

@Darkere Was this fixed with your PR?

Yep