Retextures almost, if not all blocks you'll encounter during vanilla Ancient Debris Mining with clean 1x1 textures. Designed for the spam-mining method.
The textures give you a much smoother mining experience and greatly reduces motion sickness during prolonged mining sessions. Lava and Ancient Debris textures are kept the same to make them easily noticeable in the mesh.
Since almost all rendered Nether textures have now become 1x1, it also greatly reduces lag, and could be used for casual Nether exploration if you can get used to it.