Here on
Redmi Note 8 I don't know if this is normal when I opened any application for the first time it has a slight slowness, when it stays open in the background and I click again it already opens quickly, more if I clean the windows and open any application he has a little slow time.
Same thing the notification bar if you go down with the phone locked and click on the fingerprint to unlock the device, the notification bar will slowly disappear.
Well I don't know if this is happening to me only but I am reporting here.