Cubic Chunks is a mod that reworks the chunks system which Minecraft uses to load and unload the world around you. Giving, in effect, an unlimited world in every direction. Including up and down. Which is where your quantum quarry seems to be bugging up. As is stated here.
https://github.com/OpenCubicChunks/CubicChunks/issues/331
Cubic Chunks is a mod that reworks the chunks system which Minecraft uses to load and unload the world around you. Giving, in effect, an unlimited world in every direction. Including up and down. Which is where your quantum quarry seems to be bugging up. As is stated here. https://github.com/OpenCubicChunks/CubicChunks/issues/331