Since I can’t find any place to confirm the gut feeling I’m having, I’ll try asking here. Do the upgrade levels have any effect at all on the production rate at all, or are the upgrades merely there to enhance the timer and max capacity of the mills?
I’ve upgraded just about all my mills to L9 and I’m not noticing anything in the way of increased rates in the past few grades. Honestly, I feel I’ve wasted my resources for all I took past L7 by now. _