Hy,
It seems normal that I have upgrade building constructions to level 7. Before upgrade to level 7 I have for example an upgrade farm to level 12 for 6h/8min time and after upgrade building to level 7 from economic the time to upgrade farm is 6h/32min. The game f... me. It is not normal what happens.
Be aware that there are server-wide buffs active from time to time. It would not be the first time that someone upgrades the knowledge for building and/or learning and then coming to the false conclusion that it takes LONGER after the upgrade, because he/she did not check:
- Server Buffs (like f.e. -10% Building Time)
- Hero Equipment slots (a single Falcon Figurine in the amulet slot can make a difference of up to -30% learning time alone.)
- Boosters (no active -20% Building/Knowledge Time)
:)
