Regarding this artfact:
Artifact "Efficient Crafters" - 2% reduction
Crafter ingredients reduced by 2%
When crafting a Struct, it requires 410 Lead bars without the artifact, and 402 with the artifact = 1.9% reduction, this is expected.
When crafting Glass, it requires 9 Silver bars without the artifact but only 8 with the artifact. This is actually an 11% reduction, but no complaints.
But when crafting a Boiling Flask, it requires 19 Gold bars both with or without the artifact. Reduction to 18 would be a 5.2% reduction so not surprised that it doesn't reduce.
Anyone else seen this? Or able to explain the variation?