When you click on 1 or 2 star hero the whole card appears immediately.
Heros 3, 4 and 5 star, the art work is now following anything from 0.5 sec to 2 secs behind. You get card and stats, then hero picture lags behind. Just started happening and makes a big difference if checking out enemy stats in a battle.
Same if changing costume.
It’s like the hero description text and stats is cached locally but the picture is on some slow server elsewhere.
It is annoying.