App icon is loading late

[pluckers]

When i open an app from my home screen and minimize it then app icon just below it is loading late.

See the video 

[Dineshbhai]

disabled third party launcher and icon packs..accept three dot solution

[pluckers]

I am not using any launcher. just using an icon pack. Also, it's the same issue with the default icon pack

[Dineshbhai]

turn off theme park app..again check

[Dineshbhai]

themes or launcher name bro?

[Dineshbhai]

icon pack names?