That's roughly 50% efficiency lost.
End of ParagonRenegade's quote
It's a loss of exactly 44%. Which is acceptable.
And you say you like to micro?
End of ParagonRenegade's quote
I also said, that the Yor are my favourites. Their economy is population-based, because they don't have spammable economy structures. Tech-trading is out of the question for me too (I've disabled trading and stealing of those techs in my mod).
But really, cost/effectiveness drops like a stone after 15 billion no matter what you do.
End of ParagonRenegade's quote
The limit is 20 billion. Your morale-bonuses are reduced by 66% at that point. Once you go over that, the effectiveness of your morale-improvements drops rapidly until it hits the minimum of 10% at 25b.
Under 15, I'm golden, but over that, you have to build too many structures to maintain an acceptable morale rating.
End of ParagonRenegade's quote
Sounds like you're doing something wrong, if that is the case.
Considering I keep my taxes at 70% with 100% approval, my allowance for error is very small.
End of ParagonRenegade's quote
A tax rate of 70% reduces your approval by 107%, but doesn't provide any more money than a tax rate of 69%, which reduces your approval by only 96%.