Issue Description:

Server lag in sawmill input checking.

https://i.gyazo.com/e9e6e45200d76faeffdf68d9babacbe4.png

What happens:

4% CPU usage due to continuous scan or recipes for valid input items in the SAG mill.

What you expected to happen:

Cache valid input items for the sag mills to prevent continuous scanning.

Affected Versions (Do not use "latest"):

HermitPack 1.1.0

• EnderIO: EnderIO-1.10.2-3.0.1.120_beta.jar
• EnderCore: EnderCore-1.10.2-0.4.1.56-beta.jar
• Minecraft: 1.10.2
• Forge: forge-1.10.2-12.18.2.2107-universal.jar

Your most recent log file where the issue was present:

n/a

That already is the cache...