The Au Naturel modpack and Au naturel edit of c2me creates or exposes many conflicts with the included mods as they have often never been made to explicitly run in a multithreaded environment.
Where mods aren't part of the main core edits in the other Au Naturel mods and we aren't expected to maintain explicit maintenance of those mods, but they require specific fixes or edits in order to try to gain some stability, fix race conditions, or otherwise address crashes and issues due to running with 500 other mods in the c2me environment, this is the generic mod where such fixes will be implemented.
Note: this is not designed to be a generally consumable mod, it relies specifically on both the mods being present that are/will be in subsequent matches releases of the modpack Au Naturel, and targets the Au Naturel version of c2me. Any other use is unadvised/untested.
