We use the optimal fee.
Anyway, it was raised. Thanks for your notice.
This is not optimal, but the minimum value at which there is at least some chance that the transaction will be confirmed.
https://bitcoinfees.net/But you do not consider the fact that AntPool and other affiliates with Bitmain activated ASICboost and discard segwit transactions, which is why your "optimal" algorithm in its greed goes beyond all conceivable limits.