Issue description:

once using rs to autocraft something, the sever become lag.
used hundreds of crafting pattern

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

• Minecraft:1.12.2
• Forge:14.23.0.2517
• Refined Storage:refinedstorage-1.5.21

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

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

here is an nps file of the server
lowtps.zip

Sorry for jumping in. I was asked for giving a rough analysis on the profiling report. As you can see, I stunk on these abnormal behaviors:

isOreDict should not be that time-consuming. Moreover, searching all previous issues in the issue tracker does not reveal any similar issue(s) in the past. The most-matching issue is #838 which has been duplicated multiple times, but according to the profiling result submitted, it is unlikely to connect #838 to this issue.
Therefore, this issue shall be considered as a separate issue, as it may point out a new underlying design flaw.

A network is turning off and on, causing the crafting pattern chain to rebuild constantly. Make sure enough power is supplied to the controller. This is not caused by autocrafting.