I have multiple level 1 COE and was wondering if I should upgrade one building at a time to level 2 as soon as I get 7.5 Billion or should I save up 22.5 billion and upgrade straight to level three. Does upgrading to level 2 lower plunder I know it already raises your stats. Please respond thank you
Don't build T4's if you're gonna upgrade them on level at a time. Only build them if you're gonna take them straight to level 2. Remember, a level 3 T3 may have lower stats than a level 1 T4, but that T3 has more plunder at level 3.
As others have said; I wouldn't put a t4 building unless you can fully upgrade it. That way you do not waste your time on upgrading one level at a time and you don't stress over how much more gold you need. Also as others have said; A lvl 1 or lvl 2 t4 building will have lower stats than a full level t3 building. So unless you can upgrade fully at once, I recommend that you upgrade t3 fully. -Fiddy
You will gain more plunder by upgrading to lvl 2 before level 3 in t4 attack buildings. Go ahead and upgrade to lvl 2