Oh, you meant improving the quality :) You need to be more precise! :) My best result right now is two premium slots. 2 iron, 2*25 tin and 625 copper. I don't have enough stock for 125 tin yet. Very much not enough :)
Anyway, with bronze bar crafting taking 1h - I'm thinking about freezing Mine until it would be fixed.
First I need to stop progression and wait to accumulate granite for ~6 hours, but now after it I need to wait ~12 hours to craft bars just to return to the place where I was before prestige.
I always use crystals to do my crafting. It only costs 20 and they regenerate very fast. Also, there isn't much else to spend blue crystals on. So 20 for the best possible pick and only one of each ore used seems like a good deal to me.
