Hi, I was testing in the editor mode and noticed several... issues.

First, thanks for the mod, the buildings look stunning, and the possibility to have so much productivity makes for some ridiculous factories and numbers (in the good sense).

So, when you smelt things and don't use quality, everything is fine, but when using it, suddenly the furnace gets wayyyy slower. I think it's because it can't build a buffer in the output slot so it gets "clogged". I'm talking about 95% drop in performance or even more, from 180k a minute to about 10. I don't think it's a loader issue because I've tried filtrating the items by quality and the issue persists. I've noticed the furnace has several output slots, maybe for modded entities to put everything, so could those be used to put different qualities in each of them?
There's currently 4 in the furnace, so with one more it should be enough. Maybe less, taking into account that the main products will be from max 3 qualities and the others wil be "trace" amounts. On that note, the loaders don't allow to stack items directly on the belt. If it's by design so innserters are needed, then that's fine.

Other thing is that you allow to select the initial speed of the giga belts. I have another mod, "More Quality Scaling", that allows to make belt speed be affected by quality. So, when I select 480 belts and then put the 5 qualities, they have speeds of 480, 374, 461, 547 and 720, which would align with quality scaling from 288 belts, the "base" option. This one could be a problem from the other mod, so let me know if I need to talk to the other developer.

Sorry for the wall of text, if you prefer another report format, please tell me so.

Thanks for your hard work!!

I haven't tested extensively, but the same happens with the assembler, the forge, and presumably the other machines, so they don't work well with quality.