I started playing DE/Mystic, with during Protection 50% Guids, 40% Banks and 10% Farms.

DR @ 60%, with at least 2TPA and mainly Elites

Problem is, I've never seen a Building effinciency lowering that fast, I'm under 80% at a few days OOP.

What are the options to boost a building efficiency a part from pumping sci and/or running a descent % of homes?

Is this kinda typical for a DE? Cause playing Gnome, Human or Orc I just never had this problem? Thanks in advance!!!