It is great, that you work together with Earendel. Just doing K2+SE and really like it. SE changed industrial furnace (part of AAI Industry) a week ago to have 5 module slots and higher speed. Your endgame furnace "only" has 4 slots, such that it becomes nearly useless. The only benefit is the 3xhigher speed. Due to only one beacon can influence one building, the bigger size if worse as well. The only advantage is needing less modules. But e.g. taking 5xlvl 5 prod modules gives more bonus than 4xlvl 6 prod modules (60% compared to 56%) at similar total costs even taking into account that you need 3 times more buildings (lvl 6 is slightly more than 3 times as expensive as it requires 3 lvl 5 modules)

I was considering changing your one to 5 modules as well, but it would feel less cheaty if it is done by you :-D Any plans on adjusting your furnace?

At this point I think mabye give to it a base productivity bonus, I do not like give too much slots to machines because if for some reason they reach a speed greather than 60 they can bug the game engine. I will inform Earendel of that.

I think it would be better for me to give it 5 module slots too, and reduce the base speed a bit. If you want to get the extra speed back then you can get it with a speed module in the extra slot.

I was going to ask about that too. The speed can stay where it is as the Advance Furnace is already fast enough and is still a nice multiple of the Industrial Furnace.

Your endgame furnace easily passes a speed of 60. It only needs 400% boost to do so, which can be achieved without using internal slots at all. Guess you are talking about less than 1 production per tick. As base time for all recipes in furnace seems to be 16s, it would need a speed of 960. Which is 80x original speed and unobtainable even with 10 internal slots.

yeah, that's what stacked recipes are for.

For me all solutions that are consistent with the tech tree are welcome

One could also only give it a 5th slot if played with SE (where it has higher requirements in techtree). In normal K2 even 4 is already a big improvement compared to normal electric furnace.

That's a good idea have the change only occur with SE is the way to go. With only K2 more beacons can be used so the extra slot isn't need.