How Can I Use Aosp In Red Mi Note 4?

[Jinwoo1199]

I got redmi note 4 16G for my admission gift. but this phone struggle to do heavy load. I'm thinking that MIUI is too heavy so the redmi can't do heavy load... I unlocked the phone and installed lastest build of 'xiaomi.eu'
there is any kind of method that I build the AOSP version for Red Mi? or any link?