Using Miro new update, Fast charging works!
Like what I said before they only remove the Notification when you plug-in,
Before when you plug-in it will show and notify you to Enable Boost!
New Rom xiaomi.eu its not there anymore, but you can manually enable it on the Charging Option top Speed!!
I can say that its working cause when I plug the stock charger it will show 120W fast charging... while I enable top speed in the charging option!
But If I use low charger that 120W would not show...
The Fast charging feature is working , only the notification not showing!