just for curious, can you explain me how this house edge of 0.28% is calculed?
a little info there. but this is not the exact answer maybe. admin will come and answer you.

So in order to minimize the house edge, you should only place bets that meet the lifeline rules (so only small bets).
In BlackJack, a "bad" player can have a much larger house edge than a good player. See for instance
The House Edge in Blackjack: 21 Things to Know.