Running Sky Factory 3 version 3.0.13
Reborncore: 2.13.6.142
RebornStorage: 1.0.3.30
RefinedStorage: 1.2.26

In my world i built a 16x16x16 MultiBlockCrafter with 3 crafting storage and the rest of th einterior CPUs. upon reopening the world i would either crash, enter the world except none of the blocks would load, or load into the world fully with an extreme delay on any action i would do. The only way i could solve the issue and regain control of my world was by disconnecting the MultiBlockCrafter via deleting the connecting cable in MCedit.

All development has moved to 1.12, it should fix now.

refinedmods/refinedstorage#1421 (comment)