Q:
How is decay supposed to work again?
A:
I havent really understood it, but from what I gather that 100-0 in 15 min meant the drop after zero decay timer left?
Ie if you just capped a camp at 100% T6, it will first take 10m for it to start dropping, then 15m for it to drop to 0% T0 with no activity.
Not sure though.